Books of this kind ______ popular with the pre-school children.
The witnesses(证人) of the accident said that the lorry _______ very fast at the crossroads when the accident happened.
._____ nothing is doing ill.
Our monitor talks about Mars as if he ______ a scientist.
Your floor is dirty. It needs _______.
. ---Here you go. There are______ such cards here. --- I only need ______ these cards in the box.