Megan and John realize that their house was too messy for a new baby, so they decide to ________ their house before the baby was born.
A. straighten up
B. keep back
C. strip off
D. throw away
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________ more and more forests destroyed, many animals are facing the danger of dying out.
A. Because
B. As
C. With
D. Since
After 10 years of full-time training, she has finally ________ as a professional dancer.
A. made up
B. made out
C. made it
D. made for
Nothing in my life has meant _________ to me as his praise.
A. as much
B. more
C. that much
D. as good
I can't find my purse. I ________ it in the supermarket yesterday, but I'm not sure.
A. should leave
B. must have left
C. can leave
D. could have left