Someone called me up in the middle of the night, but he hung up ______ I could answer the phone.
“Would you have told him the answer had it been possible?” “I would have, but I ____so busy then.”
If I___you, I____more attention to English idioms and phrases.
If you really want yourself to be in good health, you must___always___so much.
I______it again.
The chairman requested that ___________.