选择括号内恰当的单词填入空白处，使句意完整，正确。
---Oh, I failed the math exam!
–Don’t worry! Try your best (studying/ to study) hard, and you’ll get good grades.
--- Bill is too (careless / careful)!
----Yes, I think so. He always makes so many mistakes in his homework.
---The Tour of Qinghai Lake has the highest altitude (between / among)all races hosted by the International Cycling Union.
---You are right!
–Excuse me, can I sit here?
--Sorry, but there is no （room /space) for you.
--I hate rock music, it is too noisy.
---I don’t like it, (too / either).
The girl goes to the Reading Club a week. (two)
Please ____________(敲) on the door first before you go into the office.
The new skirt ___________(与…..相配) your hair clip very well. Do you think so?
---How much is the pen? I only have fifteen.
--- That’s ________.(足够)
---I’d like to go shopping, but I don’t have any money.
--- Here’s my _________.(钱包)