If the weather had been better, we could have had a picnic. But it ___ all day.
| A．rains | B．rained | C． has rained | D．is raining |
____ snacks and drinks, but they also brought cards for entertainment when they had a picnic in the forest.
| A．Not only they brought | B．Not only did they bring |
| C．Not only brought they | D．Not only they did bring |
Maybe you have been to many countries , but nowhere else such a beautiful palace .
| A．can you find | B．you could find | C．you can find | D．could you find |
Of the making of good books there is no end; neither ______ any end to their influence man’s lives.
| A．there is | B．there are | C．is there | D．are there |
I failed in the final examination last term and only then_____the importance of studies.
| A．I realized | B．I had realized | C．had I realized | D．did I realize |
The old couple have been married for 40 years and never once_____with each other.
| A．they had quarreled | B．they have quarreled |
| C．have they quarreled | D．had they quarreled |