He couldn’t have finished his homework last night, _________he?—No. You see, he is busy doing it now.[ ]

I can’t solve the math problem because it is too difficult. What should I do — _________ ask the teacher for help

The place he suggested to us ______ themeeting is a five-star hotel

I wish I _____him the news yestaday.

Do you know what time your uncle Dazhou tomorrow—At 2∶00 p.m.. I will meet him when he at the airport.