I was really anxious about you.You ________ home without a word.
| A．mustn't leave | B．shouldn't have left |
| C．couldn't have left | D．needn't leave |
Only when you have obtained enough data______ come to a sound conclusion.
| A．can you | B．you can | C．would you | D．you would |
Lessons______easily are soon forgotten．
| A．1earn | B．learned | C．to learn | D．learning |
If the building project______by the end of this month is delayed，the construction company
will be fined．
| A．being completed | B．completed | C．to be completed | D．completing |
I usually do the washing up and leave the cooking to my wife，______she’s a better cook than me．
| A．unless | B．as | C．even though | D．in case |
Many new workers______and in six month they will be sent to build a new railway.
| A．are being trained | B．are training | C．will train | D．will be trained |