—I have tried very hard to find a solution to the problem, but in vain.
—Why not discuss with Frank? You see, _________.
| A．two heads are better than one |
| B．a bird in the hand is worth two in the bush |
| C．it’s better to think twice before doing something |
| D．great minds think alike |
The discovery of new evidence led to________
| A．the thief having caught | B．catch the thief |
| C．the thief being caught | D．the thief to be caught |
—________ is the best football player in your city?
—Jerry.
| A．Do you think who | B．Do you think whom |
| C．Who do you think | D．Whom do you think |
Though they had not much to say, they email each other _____ .
| A．sooner or later | B．from then on | C．every now and then | D．more or less |
I demanded that he _____ English to help him improve it gradually.
| A．practise reading | B．practised reading | C．could practise reading | D．would practise reading |
The new books are of great use, they _____ well and _____ already.
| A．sell : sell out | B．sold : had sold out | C．sold : have sold out | D．sell : have been sold out |