. With a _________ expression on her face, she is _______ about what to do next.
| A．puzzled; puzzling | B．puzzling; puzzled | C．puzzled; puzzled | D．puzzling; puzzling |
I still remember __________ chess in class by my teacher about twenty years ago.
| A．to be caught to play | B．being caught playing |
| C．catching play | D．having caught playing |
The shopkeeper did not want to sell for ______ he thought was not enough.
| A．where | B．how | C．what | D．which |
You can’t imagine what great trouble they have _________ the problem_______.
| A．to solve; being talked about | B．solving; discussing |
| C．to solve; to talk about | D．solving; being discussed |
The old couple have been married for 40 years and never once _______ with each other.
| A．they had quarreled | B．they have quarreled |
| C．have they quarreled | D．had they quarreled |
They covered the body of the little hero with a flag, leaving his face_________.
| A．to expose | B．exposing | C．exposed | D．expose |