A cough is usually nothing to worry about unless it lasts for ten days ___.
| A．or more | B．instead | C．at most | D．only |
It was a nice meal, a little expensive.
| A．though |
| B．whether |
| C．as |
| D．since |
Joseph _to evening classes since last month, but he still can’t say “What’s your name” in Russian.
| A．has been going |
| B．went |
| C．goes |
| D．has gone |
“Things never come again.” I couldn’ t help talking to myself.
| A．lost |
| B．losing |
| C．loss |
| D．missed |
Mother wanted to be a good provider, a role she since her marriage to Father.
| A．shoulders |
| B．shouldered |
| C．is shouldering |
| D．has been shouldering |
The first use of atomic weapons was in 1945, and their power increased enormously ever since.
| A．is |
| B．was |
| C．has been |
| D．had been |