-----We'll do what we can --- english well this term.----It'

choose B.to study
We'll do what we can (do) to study english well this term.----It's the time for you to work hard.
这句中省略了can后面的动词do
翻译：
这学期我们将去做我们能做的任何事去学好英语-----到了你该用功的时候了