—________foggy day！
—Something must be done to solve the haze problem．
A．How
B．What
C．What a
She often provides food and clothes the homeless children.
A.of B. with C.for
I think difficult for us to learn a foreign language well.
A.it B. that C. this
—Have you finished your homework?
—Sorry .I’ll do it __________.
A.right away
B.wrong way
C.right side
—Would you mind looking after my dog while I’m on vacation?
—___________.
A.Of course not
B.Yes,I’d be happy to
C.Not at all ,I have no time
They spent as many hours as they could ___their lessons.
A.study
B. to study
C. studying