A lot of small towns in Nanchong are definitely worth_____

________ interesting book it is!

I’m on ______ diet to lose weight.— You should take ______ exercise as often as you can.

No sooner _____ on the TV than I heard the news that the stampede in Cambodia’s capital, Phnom Penh, had left 375 victims dead．

It’s nice to see you again What_________since we last met