Unit9复习试题精选一、 单项选择(20分)1. The concert will begin6: 00 pmSaturday evening. A. at; atB. at; onC. on; atD. at; in2. I cant find David. Where is he? Hefor tomorrows competition at home. A. preparesB. is preparingC. has preparedD. prepared3. She left here quietly withoutgoodbye to us. A. sayB. saysC. saidD. saying4. If you have trouble pronouncing these words, you can repeat them over and over againyou are comfortable with them. A. un
