I often volunteer my time _____ others.
A、help B、to help C、helping
I really didn’t know anything happened to Jim yesterday.
A、which B、that C、who
I think the_____invention is a mobile phone. What about you?
A、most helpful
B、more helpful
C、helpfulest
Can you provide us _________ some information _______ the computer?
A、for, with B、with, about C、about, with
He took my English-Chinese dictionary_____mistake.
A、to B、by C、about
Was a car invented_____March 4, 1876?
A、on B、in C、at
