John asked Tom ______ give him a lift to the office.
| A．if he could | B．could you | C．if could he | D．if could |
The sound of the birds __________happy memories of my childhood holidays.
| A．called up | B．called for | C．called on | D．called in |
In the USA, _______ Thanksgiving Day is a harvest festival．Traditionally, it is _______ time to give thanks for the harvest and express gratitude in general．
| A．the; a | B．/; the | C．/; a | D．the; the |
Measures have been taken to solve the problem, but it may be some time ____ the situation improves．
| A．since | B．when | C．unless | D．before |
Hoping he would not disturb his sleeping father, Bob stole in, ____ and waited for him to wake up
| A．didn’t speak | B．not to speak | C．not speak | D．not spoke |
—What do you think of last Friday’s charity pop concert, Tim?
—It was a great success as a whole．Actually we ___ with half of the money collected．
| A．would have been satisfied | B．were satisfied |
| C．would be satisfied | D．will be satisfied |