Study hard _____ you will fail the final exam.
A. and B. or C. but
—It’s very hot, but quite wet today.
—_____
A.So it does. B.So is it. C .So it is.
Maria has much trouble _____ math, so she often asks her math teacher for help.
A. understand B.understanding C.to understand
－Which is your sister ?
－The one _________ is in a pink dress．
A．who B．which C．whose
Try to guess its meaning when you meet a new word. Don’t_________ your dictionary all the time.
A.depend on B. work on C.feed on
—Look，what have you done?
—Sorry．I think if I _______ another chance，I'll do it better．
A.am given B． give C．have given
