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 |
You'd better not ride with your friends in the street．It's dangerous．（ ）
| A． |
side by side |
B． |
as a result |
| C． |
as well as |
D． |
by the way |
Mum， I play football this afternoon？
Sure，but you finish your homework first．（ ）
| A． |
may； could |
B． |
can； must |
| C． |
can； mustn't |
D． |
may； can't |
Would you like to try some pizza？
Yes，please．It lovely and nice．（ ）
| A． |
sounds； sees |
B． |
hears； turns |
| C． |
looks； smells |
D． |
sounds； watches |
Paper first about 2000 years ago in China．（ ）
| A． |
is； creating |
B． |
is； created |
| C． |
has； created |
D． |
was； created |
What a nice watch! How long you it？
For just two weeks．（ ）
| A． |
will； buy |
B． |
have； had |
| C． |
were； having |
D． |
did；buy |