—Who has taken my pen away? —__________. He was here a moment ago.
Don’t forget to take your cellphone with you _____ you can call for help if necessary.
What especially impressed us was the way _____ our teacher studied foreign language.
As you know, this is the day_____ the quake happened thirty years ago.
---Hi , Bruce. Here is a letter for you. --- Thanks. I wonder _____.
---Would you like _____ camping with me? ---- I ’d like to. But I’m busy _____ my homework.