We were swimming in the lake _______ suddenly the storm started.
| A．until | B．while | C．when | D．before |
I often make mistakes ___________ grammar..
| A．by | B．through | C．across | D．in |
--- ________. Could you tell me the way to the station?
| A．Pardon me | B．Excuse me |
| C．Sorry | D．Ok |
— 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 |
— Do you have ________ in Beijing? — Yes. My aunt and uncle live there.
| A．classmates | B．cousins |
| C．partners | D．relatives |
_______ dangerous the animals are！
| A．What a | B．What | C．How a | D．How |