As an engineer， you can't be careful． You should pay attention to every detail．（ ）
A．veryB．tooC．soD．quite
We must find out the professor is coming， so we can book a room for him．（ ）
A．howB．whyC．whenD．where
I look stupid with this haircut． All my classmates will me．（ ）
A．laugh atB．agree with
C．depend onD．worry about
Sandy seemed this morning． Do you know what was wrong？（ ）
A．satisfiedB．relaxedC．amazedD．unhappy
Millie spoke in a very low voice， but I understand what she said．（ ）
A．couldB．mightC．canD．may