Mr. Black must be worried about something. You can ____ it from the look on his face.
| A．reason | B．recognize | C．read | D．realize |
This year many factories raised the prices of clothes to _____ the higher cost to customers.
| A．pass by | B．pass on |
| C．pass for | D．pass through |
Before the operation, the doctor had to talk to the patient in order to remove her fear________ she might die during the operation.
| A．when | B．that | C．which | D．why |
— How about dinner tonight? It's on me.
— ______ .
| A．You are welcome | B．Oh, I'd like to |
| C．Well, I'm afraid so | D．That's all right |
She ______ someone, so I nodded to her and went away.
| A．phoned | B．had phoned |
| C．was phoning | D．has phoned |
I'll be out for some time. ______ anything important happens, call me up immediately.
| A．In case | B．As if |
| C．Even though | D．Now that |