.He is really incompetent! The letter ______ yesterday.a. should be finished typing b. must be finished typingc.must have finished typing d. should have been finished typing
A study shows that people living in non-smoking areas are less likely to ________the habit of smoking.
For us,_____ to college means that we can walk out of the mountains.
-----The film is, I have to say, not a bit interesting. ------Why? It’s ______________ than the films I have ever seen.
The composition is well written ___________ a few spelling mistakes.
The foreign teacher suggested __________ more to improve our reading skills.