______ until the lights have turned to green. 
#66190
A
Wait
B
To wait
C
Waiting
D
Having waited
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The floor is so dirty .Would you please     ?
#59450
A
to mop up it
B
mop up it
C
to mop it up
D
mop it up
You can’t imagine _____ when they received these nice Christmas presents.
#66002
A
how they were excited
B
how excited they were
C
how excited were they
D
they were how excited
______it is to go swimming in such hot weather!
#66036
A
What great fun
B
What a great fun
C
How great fun
D
How great a fun
_____ carefully, Michael! There’s a school ahead.
#59343
A
Drive
B
To drive
C
Drove
D
Driving