---Must I take this medicine, Mom? It ________ so terrible.---Yes, you must take it for another three days.
_____, Mother will wait for him to have dinner together.
He will come to call on you the moment he ____ his painting.
____ difficult the task may be, we will try our best to complete it in time.
It was ____ that she couldn’t finish it by herself.
Weare watching TV ______ we caught sight of a friend of ours .