Charles Babbage is generally considered _______ the first computer.
| A．to invent | B．inventing | C．to have invented | D．having invented |
—that made him unhappy?
—Well, failing in his English test.
| A．Where was it | B．What was it | C．How was it | D．Why was it |
—Father, you promised!
—Well, _____.But it was you who didn’t keep your word first.
| A．so was I | B．so did I | C．so I was | D．so I did |
Someone took away my umbrella, I’d never expect it _______.
| A．returning | B．to be returned | C．return | D．to returning |
As is natural, a man as old as he _____ be very forgetful.
| A．can | B．must | C．should | D．would |
Only by shouting at the top of his voice ____________.
| A．he was able to make himself hear | B．he was able to make himself heard |
| C．was he able to make himself hear | D．was he able to make himself heard |