Ⅰ.单句填空
1.They exchanged (greet) and sat down to lunch.
答案greetings
2.The professor for America made an (impress) speech in the hall last night.
答案impressive
3.As Teachers’ Day was approaching,our class decided to hold a party to (celebration) the important day for a change this year.
答案celebrate
4.At that moment Kelman realized it was no longer his job (protect) his friend.
答案to protect
