It’s difficult for the village children to cross the river to get to school. We think a bridge_______over the river.
---What's thirty and fifteen? --- It’s _______.
Don't me, I can look after well.
---What about _________ hiking this week? __ Great. I’d like _________ with you.
—___________________—He is going fishing.
—Would you like to go for a picnic?—Yes, __________.