Very soon the message drew dozens of responses from his classmates and other teenagers, all ______ about their excessive workload during the National Day holidays.
I think going swimming in my spare time, _____ I think is great fun and good exercise as well as a useful skill.
Thanks to the Internet, large quantities of information are now _____ to us in our home.
. Man must produce more grain to support the _____ growing population on earth.
The theory wasn’t accepted by many people when it was first ____, but it proved to be true as time went by.
He is good at maths and it won’t be long ____ he works out the problem.