I had a rest, then l_____ my bicycle.
A.was cleaning
B.am cleaning
C.cleaned
D.clean

The Netherlands, with much of its land lying lower than sea level, have a system of dikes and canals for controlling water.
A.much
B.lying
C.have
D.controlling

She is afraid of the dentist, so she always puts off ____ till the last possible moment.
A.to go
B.going
C.go
D.gone

I simply couldn’t resist ____ you to tell you the good news!
A.phoning
B.to phone
C.phone
D.phoned

Let’s not waste time ____ about this.
A.argue
B.arguing
C.having argued
D.to have argued

____ that I would be late for school, I took a taxi instead of a bus.
A.Thinking
B.Thought
C.To think
D.To be thinking

I insist on ____ this small present as a token of my appreciation.
A.your accepting
B.you to accept
C.yours accepting
D.you accept

(31) ____
A.dense-populated
B.densely-populated
C.dense-populating
D.densely-populating

A.solidarity
B.cooperation
C.voluntarily
D.economically

A.promote
B.enjoy
C.involve
D.realize