Nowadays，we don't have enough resources to use．So it's everyone's duty to save them for the future．To save resources，we should ．（ ）
①throw away a pencil without completely using it
②collect waste things for recycling
③go to school by bike instead of by car
④turn off the tap while brushing our teeth
⑤keep the lights on day and night．
| A． |
①②⑤ |
B． |
②③④ |
C． |
②④⑤ |
Please tell me______．
At ten o'clock（ ）
| A． |
where you have your English lesson |
| B． |
where do you have your English lesson |
| C． |
what time you have your English lesson |
| D． |
what time do you have your English lesson |
Dr Bethune ________ still________ in both China and Canada today．（ ）
| A． |
is； remembered |
B． |
is； remembering |
| C． |
will； remember |
D． |
has； remembered |
Harry invited me_______ with him when his parents were out of town．（ ）
| A． |
stay |
B． |
stayed |
C． |
staying |
D． |
to stay |
Jerry， have you ever been to the Great Wall？
Yes． I______ there with my parents last year（ ）
| A． |
go |
B． |
went |
C． |
will go |
D． |
have gone |
Tony was drawing a picture_______ I was doing my homework．（ ）
| A． |
if |
B． |
because |
C． |
while |
D． |
until |