What a tight football game! We lost it ______ we all tried our best.
A．because B．though C．until D．unless
The ______ boy is my neighbour.
A．15-years-olds B．15-year-old
C．15-year old D．15-years old
There was _____ people in the hall _____ it was too noisy.
A. so many; that B. too much； that
C. so much； that D. too many； that
The new mall has _ good things _ we don’t know which to choose.
A. so…that B. such…that C. enough…to D. too…to
The rivers will become dirtier and dirtier ______ we take action to protect them.
A. since B. if
C. until D. unless
It is ________ fine weather that we want to go camping.
A. so B. very C. such D. too
