In order to ______ a good knowledge of English, he gave up his job and went to study in an English training center.
The lecture began by _____us where the island was and went on _____about its history.
The sentence needs ______.
.As she is looking forward to ______from me ,please remember _______this letter on your way to school.
_____from the moon ,our earth ,with water ______seventy percent of its surface, appear as a “blue ball”
A person _____a foreign language most be able to use the language ______all his own.