In the last few months， the teachers have given lessons____the Internet as webcasts（主播）．（ ）
| A． |
for |
B． |
at |
C． |
in |
D． |
on |
Look!____ beautiful flowers!
And they smell very nice．（ ）
A．HowB．WhatC．What aD．What an
Excuse me． Could you speak a little louder？ I can't hear you ______．
OK．（ ）
A．hardlyB．cheaplyC．clearlyD．heavily
I'm very sorry， Dad． I failed the math test．
_____．You've tried very hard．（ ）
A．You're welcomeB．Sounds good
C．That's for sureD．Never mind
Has Linda washed the clothes？
No， she hasn't． She ______it after she finishes her homework．（ ）
A．didB．has doneC．will doD．was doing
My best friend Alice is much ______than me． I'm very outgoing．（ ）
A．. quietB．quieter
C．quietestD．the quietest