–_____ did you work out the problem in such a short time? --With Mr. Li’s help.
| A．When | B．Where | C．How | D．Which |
下列各组字母中全部是元音字母的是 ____。
A. a, e, o, r B. a, i, u, e C. o, u, e, n
— When shall we leave for China?
— We won’t we have visited all the places of interest here.
| A．until | B．while | C．as | D．since |
— Which do you think is ______ subject, math, music or art?[
— Art, I guess.
| A．interesting | B．more interesting |
| C．most interesting | D．the most interesting |
Davy ________ his homework at home yesterday.
| A．forgot | B．leaves | C．left | D．forgets |
It _________ outside. You’d better take an umbrella with you.
A.rains B.is raining C.rained