Let’s learn to use the problem we are facing ________ a stepping-stone to future success.
| A．to | B．for | C．as | D．by |
She wishes she ___to the cinema last night．
| A．went | B．would go |
| C．had gone | D．were going |
The old scientist used to say that knowledge ______ from practice．
| A．was coming | B．comes |
| C．had come | D．would come |
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 |