The rivers will become dirtier and dirtier ______ we take action to protect them.
A. since B. if C. until D. unless
-- Have you finished reading your book yet?
--- No, I’ll finish it in _____ ten minutes.
A. else B. more C. another D. other
Not only Linda but also I _______ out of breath at the end of the race.
A. am B. was C. are D. were
_______ no one agreed with him, ______ he insisted on learning play the piano.
A. Though; but B. Though; and
C. Though; / D. But; though
There _____ lots of bad information which is not ____ for teenagers on the Internet.
A. are; suitable B. has; fit
C. have; fit D. is; suitable
The victim’s parents have offered a(n)______ for any useful information ______to the arrest of the murder.
A. award; lead B. reward; leads
C. award; leads D. reward; lead
