The fact has worried many scientists ______the Earth is becoming warmer and warmer these years.
A. what B. which
C. that D. though
Can you give me an example ______this phrase can be used?
A. when B. that
C. where D. which
Little _____what you said. I wish you had repeated it.
A. did understand B. I understood
C. I did understand D. have I understood
Tom was so careless with his spelling that he often _______letters from words.
A. left out B. left behind
C. left off D. let alone
—What do you think of Tim?
—He appears a kind person. I don’t like him ________.
A. even so B. even though
C. though D. yet
Having retired from business, he now ________himself with the welfare of the disabled.
A. adapts B. charges
C. associates D. occupies
