______ that the government can lead them out of the financial crisis, people are optimistic about the future of the country. A. Being convinced B. Convinced C. Having been convinced D. To convince
______ surprised the family most was ________ the girl played basketball very well.
Someone is ringing the doorbell. Let’s see _______.
It is very common that former people have difficulty in _____ modern life.
I really don’t know ___ ___I kept the secret papers.
---Why do you look so upset? ---There are so many troublesome problems ____.