Every means _________, but none proved __________.
A. have tried; a success
B. have been tried; successful
C. has tried; to be successful
D. has been tried; successful
The time and effort he has devoted during the past few years________ trees in that remote area is now considered to be of great value．
A. to plant B. to planting C. plant D. planting
Sometimes smiles around the world _________ be false, hiding other feelings like anger, fear or worry.
A. can B. would C. should D. must
________ life may have in store for you, each of you has a grand, lifelong project, and that is the development of yourself as a human being.
A. However B. Wherever
C. Whenever D. Whatever
High school is undoubtedly a time of growth, both physically and emotionally, ________ academically and socially.
A. but B. as well as
C. therefore D. rather
In my three years with the city schools, I’ve seen a teacher with 10 years of experience become convinced, after just a few observations, ________ he was a terrible teacher.
A. what B. how C. that D. which
