you may have, you should gather your courage to face the challenge.
| A．However a serious problem | B．What a serious problem |
| C．However serious a problem | D．What serious a problem |
—May I see your ticket, please? I think you ________ in my seat.
—Oh, sorry. My seat is upstairs.
| A．are sitting | B．sit |
| C．sat | D．have sat |
The teacher told the kids that light ________ faster than sound.
| A．traveled | B．had traveled |
| C．is traveling | D．travels |
Have you heard the traffic ________ that happened in Yatai Street last week?
| A．accident | B．affair |
| C．incident | D．event |
—Excuse me, can you tell me the way to the supermarket?
—OK. Go ____ along the street, turn left and you'll see a tall building. That is the supermarket.
| A．mostly | B．normally |
| C．straight | D．aimlessly |
—Have you seen a red pen on the desk?
—Sorry. There is ________ pen here.
| A．not such | B．such no |
| C．no such a | D．no such |