David apologized for to inform me of the change in the plan.
| A．he was not able |
| B．he was not to be able |
| C．his not being able |
| D．him not to be able |
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 |
Look, they seem _____ about you.
| A．talk | B．to talk | C．to be talking | D．to be talked |
My brother ______singing ______ dancing while I _____ dance _____sing.
| A．prefers , to , would rather , than | B．would rather , than , prefer , to |
| C．prefers , than , would rather ,to | D．would rather , to ,prefer , to |