（山東省臨沂市2009屆高三模擬 （一），25）--Where have you been?

    --I        in the heavy traffic. Otherwise I        here earlier.

A. got stuck; would have come            B. got stuck; was

C. have got stuck; would have come       D. had got stuck; would come

山東省臨沂市2011年高三教學(xué)質(zhì)量檢測考試

Usually there might be a lot of accidents in the heavy fog. I happened to witness       this morning.

       A．it       B．those C．one   D．that

山東省臨沂市2011年高三教學(xué)質(zhì)量檢測考試

Only when          to explain         the reason for this.

       A．did he start; she realized  B．he started; did she realize

       C．did he start; she had realized   D．he started; had she realized

山東省臨沂市2011年高三教學(xué)質(zhì)量檢測考試

--- Hasn’t the thief admitted his crime by now?

    --- No,        questioned many times.

       A．if      B．though      C．unless       D．once

山東省臨沂市2011年高三教學(xué)質(zhì)量檢測考試

       I admit that there are problems. I don’t agree that they can not be solved.

       A．While       B．As     C．Since D．Unless