— What on earth are the police busy with? — They have been looking into how the plane crash _______.
Saturday or Sunday. Are you coming? — ________. I’ve got rather a busy day this weekend.
Shall I lock the lab before I go home?__________. I’ll check it myself later.
Don’t laugh at people who are ______.
He worked hard, ______ he passed the exam.
Mr. Brown knows little Japanese, so he can’t understand the ______ on the bottle of the pills.