___ from space, the earth with water ___70％ of its surface looks like a "blue blanket".
A. Seen; covered B. Being seen; covers C. Seeing; covering D. Seen; covering
____ more attention, the trees could have grown better.
A. Given B. To give C. Giving D. Having given
Someone is ringing the doorbell. Go and see ______ .
A. who is he B. who he is C. who it is D. who is it
_________ I will visit Brazil during the 2016 Olympic Games.
A. If I am possible B. If it possible C. If I possible D. If possible
___________, I have never seen anyone who’s as wise as John.
A. As long as I have traveled B. Now that I have traveled so much
C. .As I have traveled so much D. Much as I have traveled
You can make yourself _____ in English pretty well if you keep on speaking the language.
A. understand B. understanding C. to understand D. understood
