Some aspects of a pilot's job be boring, and pilots often work at inconvenient hours．
| A．can ; have to | B．may ; can |
| C．have to; may | D．ought to; must |
--- I’m going to have lunch. Do you mind talking about your plan _____ lunch?
---All right.
| A．during | B．before | C．over | D．until |
_______ we start thinking and believing we can do it, anything is possible.
| A．Since | B．While | C．Until | D．Once |
The output of the gold mine is now four times _____ it was before liberation.
| A．that | B．what | C．which | D．than |
Thinking of the days, when he was looked down upon as a poor peasant, _______.
| A．his heart was filled with sorrow | B．tears came down his face |
| C．he was in great sorrow | D．we found him wiping his eyes |
Laws have been passed in parts of South Africa, _____ governments either tax shoppers who use plastic bags or fine companies that hand them out.
| A．which | B．where | C．as | D．what |