I usually ride _____ bike to school．But this morning，I went to school by _____ bus．（ ）
A．a； theB．the； aC．不填； aD．a； 不填
﹣I think wearing seat belts is very important for road safety． ﹣_____（ ）
| A． |
That's all right． |
B． |
I'm sorry． |
| C． |
That's a good idea． |
D． |
I agree． |
﹣_____﹣It's a pleasure．（ ）
| A． |
Don't worry about the task． |
| B． |
Thank you for showing me around． |
| C． |
Be careful when you travel． |
| D． |
You' d better go to the dentist's now． |
Vivian will take her daughter to the amusement park_____she gets the tickets．（ ）
| A． |
if |
B． |
until |
C． |
although |
D． |
unless |
Which club do you prefer to join，the chess club_____the dancing club？（ ）
| A． |
so |
B． |
but |
C． |
or |
D． |
for |
﹣Tom，_____here to carry the luggage upstairs for me，will you？ ﹣All right．（ ）
| A． |
come |
B． |
came |
C． |
coming |
D． |
to come |