3.They have known each other_________they were children.
A.for
B.while
C.Since
4.Since going by taxi is so expensive, I suggest _________ by bus to save money.
A.to go
B.go
C.going
5.Do you know the lady _________ is standing over there?
A.who
B.whom
C.which
6.He didn’t arrive __________ to take part in that conference.
A.enough early
B.early enough
C.so early
7.She asked me what _________.
A.is my name
B.my name is
C.my name was
8.The Parkers _________ in the garden when their friend came into the house.
A.were working
B.work
C.worked
9.Islam is the country’s official ______________in Malaysia.
A.region
B.currency
C.religion
10.Lan is very tired.________, she has to finish her work before going to bed.
A.So
B.However
C.Although