Someone called me up in the middle of the night, but they hung up I could answer the phone.
| A．as | B．since | C．until | D．before |
Don’t put your hand out of the car window, ______ you will be hurt by the passing traffic.
| A．but | B．so | C．and | D．or |
---Must I work out the problem right now?
---Yes, you _______. It’s very serious.
| A．can | B．must | C．may | D．should |
We’re glad to see that Beijing is developing _______ these years than ever before.
| A．quickly | B．more quickly | C．most quickly | D．the most quickly |
---What time does the library open?
--- ______ eight o’clock.
| A．In | B．On | C．At | D．To |
---I took lots of photos in Hainan.
---Really? Could you show ______ to me?
| A．it | B．their | C．they | D．them |