- Has your friend completed his design? - Not yet. He ________ on it last night.
| A．worked | B．has worked | C．is working | D．was working |
– The two young firemen fell from the twelfth floor and died in the fire.
– It ________ be a big loss to their families.
| A．may | B．must | C．need | D．Might |
Wechat really makes ________ easier for people to keep in touch with each other.
| A．that | B．it | C．this | D．one |
Nanjing is about 1,100 km away from Beijing and it’s nearly a ________ ride by high-speed train.
| A．four hours | B．four-hour’s |
| C．four-hour | D．four-hours |
– I left my keys in the room yesterday. I had to get in ________ the window.
– I’m afraid it was dangerous to do so.
| A．in | B．through | C．over | D．to |
– How do you like this soap opera?
– I think it’s very boring, ________ my mother always wants to watch it.
| A．if | B．but | C．or | D．So |