I’m sure Jack can win the competition this term.—Yes, I agree. _________ he works in his free time!

Hawaii is ________a beautiful place of interest. It is also famous for its rich cultural relics.

Experts say it is an international trend to __________ MP2.5 to check air quality.

Keep your kids away from the _____ knives. They may cut themselves. [ ]

What about playing with the boysthere in the water while learning swimming — In my opinion, ________