Unless this biodiversity were maintained, marine life would be at stake.
A.If this biodiversity were maintained, marine life would be at stake.
B.If this biodiversity weren’t maintained, marine life would be at stake.
C.If this biodiversity were maintained, marine life wouldn’t be at stake.
D.If this biodiversity weren’t maintained, marine life wouldn’t be at stake.

We'd better speed up if we want to get to the concert in time.
A.put down
B.lie down
C.slow down
D.turn down

What is the main idea of this reading?
A.The ancient Egyptians used a lot of makeup.
B.People have always used makeup.
C.Some cosmetics in the past were dangerous.
D.Italian women had the best makeup.

The novel was such interesting that I read it from the beginning to the end in 4 hours.
A.such
B.read
C.the beginning
D.in

Cây công nghiệp lâu năm quan trọng nhất ở Trung du và miền núi Bắc Bộ là:
A.cà phê
B.chè
C.cao su
D.điều

Learning foreign languages ________ a lot of time.
A.require
B.requires
C.have required
D.are requiring

These machines_____very well by the time you come back next month.
A.will be working    
B.are going to work  
C.will have worked  
D.are working

She thinks that unfortunately they may not understand the benefits of online information.
A.advantages
B.points
C.features
D.amounts

Nếu chi cho Quảng cáo là 210 triệu đồng thì chênh lệch giữa chi cho Vận chuyển và chi cho Thuế là bao nhiêu triệu đồng?
A.\(125\)
B.\(95\)
C.\(65\)
D.\(35\)

The amount Sarah earned was _______on how much she sold.
A.dependence
B.depend
C.dependent
D.independent