The traveler lost his way in the woods, and ________made things worse was that it was getting dark.
| A．that | B．what | C．which | D．as |
______ well, you need to have a good sense of balance.
| A．Danced | B．To dance | C．Dance | D．Dancing |
I ________ be a little bit slow, but at least I don’t make stupid mistakes.
| A．should | B．may | C．must | D．need |
The two runners are neck and neck; _______ of them could win the race.
| A．either | B．neither | C．all | D．none |
I usually have ________ hamburger while waiting for ________7: 00 school bus.
| A．the; a | B．不填; the | C．a; the | D．不填; a |
My calculations werebasedonthe __________ thathouse prices would remain steady.
| A．theory | B．assumption | C．procedure | D．regulation |