I wonder how it ____ that Chinese climbers successfully finished the torch relay on the Mount Qomolangma, where the air is so thin.

The strong wind on the lake ____ high waves and made our boats shake violently.

rents are advised to _______regular contact withchildren through phone calls, emails, texts or video chats

The students were singing an English song _______ Mr. Xiang came into the classroom.

I’m going to Qingdao for the summer holiday.— _____ !