—Can they go to the movies?
—________. They might have to do their homework.
A.Yes, I think so.
B.Yes, they would love to.
C.No, they are not free.
If you keep on working hard, you________good grades.
A.get B.will get C.got
If there are________cars on the roads, there will be ________ air pollution.
A.fewer; less B.less; less C.more; less
—Could you ________the radio a little bit? Your sister is sleeping.
—OK.
A.turn on B.turn down C.turn off
Eric is wondering ________he could climb to the top of the mountain as he was too tired to do that.
A.if B.that C.which
We will have a picnic in the park________ it rains heavily.
A.unless B.until C.if
