—It's dangerous to swim in this river.
—Yes，you are right.The government has ______ people not to swim in it.
| A．trained | B．warned | C．led | D．Encouraged |
There is no dictionary _______you can find everything.
| A．that | B．which | C．where | D．in that |
I don't know if it ＿＿＿＿ (rain) tomorrow. If it ______ (rain) tomorrow, I won’t climb the hills.
| A．rains, rains | B．will rain, rains |
| C．will rain, will rain | D．rains, will rain |
Joan and Mary haven't seen each other_____ they left school five years ago.
| A．as | B．before | C．after | D．since |
A talk on Chinese history _____ in the school hall next week.
| A．is given | B．has been given |
| C．will be given | D．gives |
—Is Xiao Li in the classroom?
—No, hethere. I saw him in the reading room just now.
| A．can’t be | B． mustn’t be |
| C．is | D．needn’t |