．He looked around and caught a man ________his hand into the pocket of a passenger．
| A．put | B．to be putting | C．to put | D．putting |
The old man has three sons，and two _____ are doctors．
| A．of which | B．of whom | C．of them | D．of that |
"How dare you say that?" The teacher said ___ to Tom.
| A．angrily pointed | B．and angrily pointing |
| C．and point angrily | D．angrily pointing |
We have to keep with the changing times.
| A．step | B．the pace | C．a pace | D．pace |
---Be careful! Your clothes will catch fire.
---Thank you._______ so close to the fire.
| A．I didn’t know I was | B．I don’t know I am |
| C．I hadn’t known I was | D．I don’t know I was |
He is an hour late by now．He last night．
| A．must stay up | B．should stay up |
| C．must have stayed up | D．should have stayed up |