— Which country has a population，China or Canada？
— China.Canada is a lot crowded than China.
A．bigger；lessB．bigger；more
C．smaller；lessD．smaller；more
—Shall we play basketball this afternoon？
—Good idea!Do you have basketball？（ ）
A．the；aB．a；aC．/； /D．/；a
﹣ I stayed up late to finish my report last night and I feel tired now.
﹣ _________.Sleep is also important. （ ）
A．Don't burn the candle at both ends
B．Actions speak louder than words
C．Don't put all your eggs in one basket
D．Many hands make light work
﹣ Thanks a lot for taking care of my boy when I was away.
﹣ _________.We had great fun together.（ ）
A．All the bestB．Good idea
C．That's rightD．Don't mention it
China's Tianwen I Rover landed on Mars on May 15th.2021.Do you know _______？（ ）
A．what it was going to discover
B．why was it sent there
C．what it looks like
D．how many photos does it take there
﹣ My family will go on a trip to Beijing this summer.But we haven't decided _________.
﹣ Why not take the high﹣speed railway!（ ）
A．when to leave
B．how to get there
C．which hotel to choose
D．how long to stay there