in the rules that you should not tell others the password of your account.
A, What is required B, What requires C, It is required D, It requires
A person _____e-mail account is full won’t be able to send or receive any e-mails．
| A．who | B．whom |
| C．whose | D．whoever |
In the last few years, China ____ great achievements in environmental protection．
| A．has made | B．had made |
| C．was making | D．is making |
_____ the early flight, we ordered a taxi in advance and got up early．
| A．Catching | B．Caught |
| C．Catch | D．To catch |
It is the third time that she has won the race, ______ has surprised us all．
| A．that | B．where | C．which | D．what |
Sit down, Emma．You will only make yourself more tired,________on your feet．
| A．to keep | B．keeping |
| C．having kept | D．to have kept |