By the time he realizes he ____into a trap, it’ll be too late for him to do anything about it.
| A．walks | B．walked | C．has walked | D．had walked |
On the double 11th day, my uncle’s online store has successfully sold _____ shoes as last year, that is, it can hardly make ______ progress.
| A．as many twice; worse | B．as many twice; bad |
| C．twice as many; good | D．twice as many; better |
All the students don’t want ________ any misunderstanding among them.
| A．there is | B．there are | C．there being | D．there to be |
---- Have you bought the newly-produced equipment on display?
----- Not yet, for I still prefer ______ at my home.
| A．the one | B．it | C．that | D．one |
She ______ 21 in June.
| A．becomes | B．gets | C．grows | D．turns |
The student must be working very hard, ________?
| A．doesn’t he | B．mustn’t he | C．needn’t he | D．isn’t he |