China's first Mars rover，Zhurong，touched down on the Red Planet _______ May 15，2021.（ ）
| A． |
on |
B． |
in |
C． |
at |
D． |
to |
The new railway ___in our hometown in 2013．（ ）
A．was builtB．is builtC．has built
What are you doing now？
I ___to the music．（ ）
A．is listeningB．am listening
C．Was listening
___do you have an English test？
Once a month．（ ）
A．How oftenB．How longC．How soon
___you ever ___to the Great Wall？
Yes，Three times．（ ）
A．Has，beenB．Have，beenC．Have，gone
Which subject do you like ___，English or math？
Of course，English．（ ）
A．wellB．betterC．best