Is this the reason ___________ at the meeting for his carelessness in his work?
| A．he explained | B．what he explained | C．how he explained | D．why he explained |
— Can you explain your mistake?
— The fact is _______ I didn’t notice the warning．
| A．that | B．how | C．why | D．what |
My iPhone isn’t in my bag．Where ____ I have put it?
| A．can | B．must | C．should | D．would |
____ 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 |