He is in deep sorrow, so it is not a(n) time to mention the subject.

t want to go shopping. ________, it’s raining heavily outside.

______ to know about his sister’s present situation, Tom couldn’t fall asleep the whole night until he finally received her phone and was told she was all right.

I wonder _ _.— I’m afraid we’ll be late.

He made a mistake，but then he corrected the situation__________it got worse.