He has not quite solved the problem yet, but he is ______ it.
A: making of
B: working on
C: clearing up
D: trying out
A: making of
B: working on
C: clearing up
D: trying out
举一反三
- If he ( ) the problem well, he couldn't have solved it. A: has not studied B: shouldn't have studied C: had not studied D: were not to study
- He has been making (inquire) ________ about it.
- He demanded that the problem () at once. A: would be solved B: is to be solved C: is solved D: be solved
- He has many ______ that take up his time when he’s not working on his novels.
- 2. Frank has solved the problem by putting up a notice.