I hear you have a home robot．
Yes，it's amazing．It ______ do all my housework．（ ）
A．mustB．shouldC．couldD．can
If you are going to be a computer programmer， you'd better start with the ABCof computers．（ ）
A．English grammarB．English letters
| A． |
the difficulties |
B． |
the basic knowledge |
Jack will have a birthday party tomorrow． Do you know__________？
I'm not sure． Let's call Cathy and she may know something about it．（ ）
| A． |
how can I get there |
| B． |
what gift he prefers |
| C． |
why didn't he invite me |
| D． |
where the party was held |
_______ rapid progress our country is making in science and technology!
So it is． We are enjoying the convenience of modem technology．（ ）
| A． |
How |
B． |
What |
C． |
What a |
D． |
What an |
As common people， the medical workers choose to stand out and________others without thinking twice． They are the most beautiful angels．（ ）
| A． |
protect |
B． |
protecting |
C． |
admire |
D． |
admiring |
It's reported that the 2020 Tokyo Olympic Games have been_________until July 23， 2021．（ ）
| A． |
put up |
B． |
put down |
C． |
put on |
D． |
put off |