The government has taken some measures to reconstruct the earthquake-hit areas, but it must be some time ________ everything returns to normal.
| A．since | B．after | C．unless | D．before |
— I’m sorry I didn’t make it to your party last night.
— ______, I know you’re busy these days.
| A．Of course | B．No kidding |
| C．That’s all right | D．Don’t mention it |
Tom caught several fish after three hours, and only then ______ that the secret of success was patience.
| A．he realized | B．did he realize |
| C．he had realized | D．had he realized |
— I ______ down to the shops. Could I get you anything？
— No, thanks. I’ll do e-shopping.
| A．was just going | B．would just go |
| C．have just gone | D．am just going |
I only planned to be there for a few days, but I actually ______ staying for a whole month.
| A．set up | B．added up |
| C．built up | D．ended up |
Jim had just stepped out of the bathroom and was busy drying himself with a towel ______ he heard the steps.
| A．while | B．when | C．since | D．After |