No matter how ______，scientists are eager to know more about it by exploring.
A. an ocean may be deep B. deep may an ocean be
C. deep an ocean may be D. may an ocean be deep
The parking rules in public places should be ______ strictly， otherwise you will get a ticket.
A. realized B, recognized C. consulted D. observed
— Tony, are you listening to me?
—Sorry, Sir. I ______ to figure out what you said just now.
A. was trying B. have tried C. tried D. had tried
Several leading _____ resigned from the party yesterday.
A. figures B. numbers C. images D. memberships
The test not only helps make our _____ acquired knowledge permanent, but also enables us to find out what needs to take more time to improve.
A. quickly B. presently C. shortly D. newly
--Mr. Yang looks rather a kind gentleman.
---But in fact he is cold and hard on us. You _____ believe it!
A. shouldn’t B. couldn’t C. wouldn’t D. needn’t
