Playing QQ's "Happy Farm" by planting, watering, fertilizing, spraying, harvesting and selling of virtual vegetables, fruits and flowers, we can find out _____ all the excitement is about．
| A．that | B．if | C．what | D．when |
____ you start eating in a healthier way, weight control will become much easier．
| A．Unless | B．Although |
| C．Before | D．Once |
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 |