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The flowers are _______ colorful that we can’t stop ______ photos.

     A. so , taking     B. so , to take    C. such , to take   D. such , taking

You must be very tired. Why not         a rest?

   A. stop taking          B. stop to take        C. to stop taking     D. to stop to take

 I don’t doubt _________ his advice is well worth________.

A. that, taking        B. if, to take        C. whether, taking  D. that, to take

You must be very tired. Why not 　　　 a rest?

A. stop taking B. stop to take C. to stop taking　　　　　 D. to stop to take