They had to work late yesterday, ............
A.hadn't they
B.didn't they
C.they hadn't
D.they didn't

It's a pleasure............ you after so many years.
A.meet
B.to meet
C.met
D.to meeting

It was clever of him.............. the crossword in five minutes.
A.do
B.did
C.doing
D.to do

A.leave
B.dead
C.teach
D.meal

A.priority
B.sticky
C.spring
D.charity

A.abrupt
B.club
C.occur
D.crupt

Read the passage and choose the best option to complete each blank.
Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes ____46___ ecosystems. If there is too little rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals____47___feed on it may also die or move away. Some changes are good for ecosystems. Some pine forests need fires for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets the seeds ____48___. Polluting the air, soil, and water can harm ecosystems. Building dams on rivers for electric power and irrigation can harm ecosystems ____49___ the rivers. Bulldozing wetlands and cutting down forests destroy ecosystems. Ecologists are working with companies and governments to find better ways of ___50____ fish, cutting down trees, and building dams. They are looking for ways to get food, lumber, and other products for people without causing harm to ecosystems.
___50___
A.catching
B.holding
C.carrying
D.taking

Read the passage and choose the best option to complete each blank.
Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes ____46___ ecosystems. If there is too little rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals____47___feed on it may also die or move away. Some changes are good for ecosystems. Some pine forests need fires for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets the seeds ____48___. Polluting the air, soil, and water can harm ecosystems. Building dams on rivers for electric power and irrigation can harm ecosystems ____49___ the rivers. Bulldozing wetlands and cutting down forests destroy ecosystems. Ecologists are working with companies and governments to find better ways of ___50____ fish, cutting down trees, and building dams. They are looking for ways to get food, lumber, and other products for people without causing harm to ecosystems.
____48___
A.out
B.in
C.go
D.fly

Read the passage and choose the best option to complete each blank.
Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes ____46___ ecosystems. If there is too little rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals____47___feed on it may also die or move away. Some changes are good for ecosystems. Some pine forests need fires for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets the seeds ____48___. Polluting the air, soil, and water can harm ecosystems. Building dams on rivers for electric power and irrigation can harm ecosystems ____49___ the rivers. Bulldozing wetlands and cutting down forests destroy ecosystems. Ecologists are working with companies and governments to find better ways of ___50____ fish, cutting down trees, and building dams. They are looking for ways to get food, lumber, and other products for people without causing harm to ecosystems.
___46___
A.harms
B.harmful
C.harmless
D.harm

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the questions
Because the kids were too noisy, the guard made them leave the room.
A.The guard stayed in the room after making the kids leave.
B.The children were noisy, so they asked the guard to leave them in the room.
C.When the guard forced the kids to leave the room, they were very noisy.
D.The children were too noisy to stay in the room.