In the past，people didn't know that the earth ________ around the sun.（ ）
| A． |
will move |
B． |
moved |
C． |
would move |
D． |
moves |
Sorry， you can't take the dictionary away，Vicky．I it．（ ）
A．usedB．am usingC．have usedD．was using
China's efforts to stop the spread of COVID﹣19 will the world's ability to limit the harm in the near future．（ ）
A．imagineB．inventC．insistD．improve
We still know little about the Moon_________men have landed on it．（ ）
A．ifB．sinceC．althoughD．because
What a sunny day! Why not go cycling？
_________．（ ）
A．No， I don't mindB．You'd better not
C．That sounds greatD．It's my pleasure
I have some tickets for the football match． I called my friends to see_____．（ ）
A．where did they buy them
B．why they liked to go there
C．when did we go together
D．whether they'd like to go