We _____ on this project for four hours． Let’s have a rest．
| A．are working | B．have been working |
| C．worked | D．had worked |
I don’t doubt _____he will come next week.
| A．that | B．if | C．what | D．when |
When the thief found the police had already _____him, he ran away quickly.
| A．realized | B．known | C．spotted | D．stared |
Tom’s father didn’t _____him to join the school football team.
| A．let | B．promise | C．hope | D．permit |
_____you like him or not is none of my business.
| A．who | B．That | C．What | D．Whether |
---I didn’t go to work today.
----You _____; it’s Sunday today.
| A．mustn’t have | B．didn’t need to |
| C．can’t have | D．needn’t have |