Professor Smith ___ China yesterday.
| A．arrived at | B．arrived in | C．get go | D．reached for |
I’m writing to you and ask whether you’d like to give us ___ how to learn English.
| A．some advice on | B．some advices about | C．an advice about | D．advices on |
I wonder why he hasn't __ any of my letters for such a long time.
| A．replied | B．replied to | C．answer for | D．asked |
--Look! John is ___. Let’s go and see if he needs any help.
A, out of the breath B. out of breath C. out of his breath D. out of breathes
It's dark, Mum ___ be waiting for my return.
| A．can | B．should | C．must | D．may |