—What courses are you going to learn next term?
—I don't know.But it's about time ________ on something.
| A．I'd decide | B．I decided |
| C．I decide | D．I'm deciding |
_____ she was sick, I was expected to take his place greatly surprised me, for I didn’t have much work experience.
| A．That if | B．That | C．If that | D．If |
—Did you have any difficulty catching yesterday’s lecture?
—No. The professor spoke very clearly to make his speech easy _____.
| A．understood | B．understanding | C．to be understood | D．to understand |
After months of voyage, Columbus arrived in _____ later proved a new continent.
| A．where | B．which | C．what | D．that |
—Do you think our team will win the game?
—I don’t know. But this is the last chance. We _____ them to.
| A．hope | B．require | C．prefer | D．demand |
____ our natural resources is very necessary.
| A．The most we make of | B．The most we make |
| C．The most which we make | D．Most which we make of |