---We all wonder ____ the relationship between France and China is good again now? ---Because the two countries have common national benefits.
He couldn’t ____ the noise, so he kept the windows shut all day long.
I became more and more excited, trying to work out ____ Mom was taking us on holiday.
____ to reach the headmaster on the phone, the student sent an email instead.
The lawyer required the ____ of evidence so that he could defend the accused.
Sorry, Dad, I forgot to water the flowers. --____. You can do it after lunch if you like.