Try not to cough more than you can_____since it may cause problems to your lungs.

 — Mum, I really think Dad should have a break and get relaxed.—Yes. He_________ too long.

Unfortunately when we arrived she ___, So we only had time for a few words.

The manager is said to have arrived back from Paris where he _______ some European business partners.

.My brother wants to work in the factory which ______ still ______.