We felt ______ impossible to finish the work without help.

You shouldn’t have gone there alone last night—But I __________ , because Xiao Wang went there, too

Shirley，a real book lover，often brings home many books to read ________ the library

Why are you so happy today-Because I ______ to London with my parents tomorrow.

Jingdong is a popular online shopping website, ______varieties of items at low prices.