— Did you watch the sunrise of Mount Tai last weekend?— Yes. Luckily enough, when we climbed to the top of it, the thick fog began to _____ .
By the end of this year, we _____ 2000 English words.
_______ knows the truth will tell you about it , I think .
The head engineer is in ________ the project .
______ began our new lesson.
I didn’t manage to do it _____ you had explained how.