The shoes are very nice. Can I ________

When his father started questioning his explanation, he had to ____ more details for his mistakes.

It is difficult for us to learn a lesson inlife_________we’ve actually had that lesson

The price of oil is __________higher and higher, which doesn’t prevent people from owning a new car in many developed cities in China. [ ]

Susan, go and join your sister in cleaning the yard.- Why______ John is sitting there doing nothing at all.