The recent research attempts to the effectiveness of different drugs used for the new virus.
| A．cover | B．guarantee | C．estimate | D．evaluate |
He wrote a lot of novels, none of _____ translated into a foreign language.
| A．them | B．which | C．it | D．what |
—Did Jack come back early last night?
—Yes. It was not yet eight o’clock _______ he arrived home.
| A．before | B．When | C．that | D．until |
She is quite a different girl _____ she was five years ago.
| A．from | B．to | C．than | D．with |
Our football team will never take the defeat ____ down.
A. sittingB lying C. going D. climbing
Would you ____ help me?
| A．mind to | B．be kindly enough to | C．be so good | D．be so good as to |