34．—Where is Xiao Wang?
—I don't know．He__________ be in the library.
| A．can | B．must | C．might | D．May |
Henry escaped ____ by admitting his mistake.
| A．being punished | B．having been punished |
| C．having punished | D．punishing |
I first met Lisa three years ago. She _____ at a shop at the time.
| A．has worked | B．was working |
| C．had been worked | D．had worked |
He studies the subject _____.
| A．far | B．farther | C．further | D．farthest |
Charles Babbage is generally considered ______ the first computer.
| A．to invent | B．inventing |
| C．to have invented | D．having invented |
"Can’t you read?" Mary said ______ to the notice.
| A．angrily pointing | B．and point angrily |
| C．angrily pointed | D．and angrily pointing |