__________ I was talking on the phone, my mother arrived at home.
| A．when | B．until | C．while | D．although |
I saw some old men ________ Taiji when I passed the park.
| A．doing | B．do | C．to do | D．did |
________ you want to go out, let me know, please.
| A．While | B．If | C．Whether | D．Though |
You ________ lend the bike to others because I’ll use it.
| A．may not | B．mustn’t | C．needn’t | D．mightn’t |
Linda is too excited to ________ at night because of the concert.
| A．go to bed | B．fall asleep | C．fall into | D．fall over |
Don’t keep us ________ for a long time next time.
| A．wait | B．waited | C．to wait | D．waiting |