Mrs. Black doesn’t believe that her son is able to design a digital camera, ______?
| A．is he | B．isn’t he | C．doesn’t she | D．does she |
It was too noisy outside. Not until ____at the top of my voice _____his head.
| A．I shouted; had he turned | B．did I shout ;did he turn |
| C．had I shouted; he turned | D．I shouted ;did he turn |
-----Did your father come back early last night?
-----Yes ,It was not yet eight o’clock _____he arrived home.
| A．before | B．when | C．that | D．until |
To keep safe _______an earthquake, you should remain at a spot in your room where nothing may fall on you.
| A．in search of | B．in advance of | C．in terms of | D．in case of |
—He is eager to try something he has never tried before.
—Oh, I see. That’s _______ he’s different from others.
| A．when | B．where | C．how | D．what |
–Do remember to charge the battery 12 hours when you first use it.
--_________.
| A．Made it | B．Got it | C．Understood it | D．Remembered it |