—It is _______he often fails in exams_______ makes his parents worried about him.—So, he has to work whole-heartedly.
She wishes she ___to the cinema last night.
The old scientist used to say that knowledge ______ from practice.
A person _____e-mail account is full won’t be able to send or receive any e-mails.
In the last few years, China ____ great achievements in environmental protection.
_____ the early flight, we ordered a taxi in advance and got up early.