Bike sharing is very useful in our daily life it still has some disadvantages．（ ）
| A． |
unless |
B． |
because |
C． |
although |
I walked here today，so this bike ___________ be mine．（ ）
| A． |
can |
B． |
mustn't |
C． |
can't |
D． |
must |
I knocked at the door but ___________ answered． Maybe they went to the concert．（ ）
| A． |
nobody |
B． |
somebody |
C． |
everybody |
D． |
anybody |
She walked into the room ___________ in order not to wake up her baby．（ ）
| A． |
clearly |
B． |
loudly |
C． |
easily |
D． |
quietly |
Developing good reading habits can ___________ our reading speed．（ ）
| A． |
review |
B． |
receive |
C． |
spread |
D． |
increase |
Chinese scientists have made great ___________ in medical research．（ ）
| A． |
attention |
B． |
progress |
| C． |
information |
D． |
pride |