Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Since he , I have heard nothing from him.
A.had left
B.was leaving
C.has left
D.left

I agree with most of what you said, but I can't ____________ your idea of letting children leave school at the age of 14.
A.go along with
B.put up with
C.keep up with
D.come up with

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The trees .
A.were grown by John yesterday in the backyard
B.were grown in the backyard yesterday by John
C.were grown in the backyard by John yesterday
D.in the backyard were grown yesterday by John

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
More and more investors are pouring money into food and beverage start-ups.
A.an
B.the
C.Ø
D.a

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
If you do not learn seriously, ________ to understand the subject well.
A.you will never be able
B.will you never be able
C.never you will be able
D.will never you be able

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Christopher Columbus America more than 500 years ago.
A.discovered
B.has discovered
C.had discovered
D.discovers

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The man ______ is very friendly.
A.that lives next door
B.who live next door
C.which lives next door
D.who lives the next door

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
It is high time we ___ __ something to protect our environment .
A.do
B.to do
C.did
D.have done

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
It was an interesting speech that everyone stayed till the end.
A.too
B.very
C.such
D.so

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
I gave him my e-mail address he could keep in touch with me.
A.in order
B.so as
C.that
D.so that