We know that about seventy percent _____ the earth _____ covered by water.
A. /; is B. of; are
C. of; is D. about; are
The question is _________ .
A. so hard for us to understand it
B. too hard for us to understand it
C. too hard for us to understand
D. so hard for us to understand
-- Must I return the book this week?
-- No, you ______. You can _____ it for 20 days.
A. mustn’t; keep B. don’t have to; borrow
C. needn’t; keepD. mustn’t; lend
– You shouldn’t stay up late tonight.
– Thanks, I will go to bed earlier. .
A. No pain, no gain
B. I believe practice makes perfect
C. Many hands make light work
D. I won’t burn the candle at both sides
The president of the USA around the Palace Museum last month.
A. has showed B. showed
C. was showed D. has been showed
– Mum, do you mind my listening to music for a while?
– . But please listen to it with your earphone.
A. Yes, please B. No, thank you
C. Not at all D. Yes, I do
