The Beatles began to be popular ______ in the USA.
A.in the 1960s B. in the year1960 C. in 1960’s D. in 1960
--When did you become a volunteer for the elderly?
-- Two years ago. I ______ this group since then.
| A．joined | B．took part in | C．have joined | D．have been in |
He met many problems ______ he was going over his lessons.
| A．before | B．as soon as | C．since | D．while |
--What about finding out ______ Alice is going to Wuxi?
--I’m afraid her friends have told her Wuxi has many places of great interest.
| A．where | B．that | C．why | D．how |
--Just a minute. I’ll go to get some apples for you.
--Thanks, but you ______ get too many. One is enough.
| A．can’t | B．needn’t | C．may not | D．mustn’t |