we work at English，the better grades we will get．（ ）
A．HarderB．The hardest
C．HardestD．The harder
﹣﹣﹣This is so difficult that I want to give up.
﹣﹣﹣Take it easy .______ ，it takes time to learn something new.（ ）
| A． |
In that case |
B． |
For example |
| C． |
By the way |
D． |
After all |
The videos about cooking tell us how food_______ .（ ）
| A． |
makes |
B． |
made |
C． |
is made |
D． |
was made |
Learn ________ ，and you will be a successful learner.（ ）
| A． |
wisely |
B． |
lazily |
C． |
quickly |
D． |
blindly |
Don't you know passengers ________ smoke on high﹣speed trains？（ ）
| A． |
needn't |
B． |
mustn't |
C． |
wouldn't |
D． |
couldn't |
Our national hero Yue Fei _______ to devote （贡献） himself to the country at a young age.（ ）
| A． |
failed |
B． |
forgot |
C． |
promised |
D． |
refused |