Stress can be very harmful to your health. Exercise, ______, can reduce its bad influences.— I can’t agree more.

____ never to come back before he could make a big fortune, Mike left home without saying a word[ ]

Mum, I’m hungry now I didn’t have breakfast this morning.

____ bikes are red. ____ are blue.

has your father been staying in Jiuzhaigou—For two weeks.— will he be back—In two days，I think.