1 . If only I _________ (know) her phone number! Then I could call her right now.

2 . Look at the trouble we are in. If only we________(take)our teacher's advice. （所给词的适当形式填空）

3 . 单句语法填空
1. I'm afraid you can't take a holiday without the________(approve) of our boss.
2. Addicted to_______(play) online games, Bob is beginning to lose interest in his study.
3. Reflecting_______my successes and failures, I realized that I had gone through a zigzag but meaningful life journey.
4. _____ you like best of the three dresses, you can take it—I don't care.
5. The number of smokers, _______ is reported, has dropped by 17 percent in just one year.
6. I arrived at the airport ten minutes late, but fortunately there was also a delay in the____(depart)of our plane.
7. Would you like to make a_______(donate) to our charity's appeal?
8. The failure of the project proved him_______(be) an unwise leader.
9. I am afraid of the coming exams. If only I_______(have) time to review my lessons.
10. Women in developing countries _________(typical) have their first child when they are very young.

4 . 语法专练（虚拟语气）
1. I would rather you ______________ （decorate ） the painting house tomorrow afternoon.
2. The doctor recommended that the medicine ______________ （take ）three times a day.
3. Without air, there ______________ （exist）no life on earth.
4. If I hadn't taken your advice, I ______________ （not manage）to carry out the project now.
5. It's high time that we ______________ （apply ）ourselves to the task of protecting our environment.
6. Her advice is that good study habits ______________ （form） in one's childhood.
7. I felt so embarrassed when being blamed by my teacher in class. If only I ______________（complete）my homework last night!
8. He talks about the creatures of the Amazon rainforest as if he ______________ （explore）there before.
9. I was busy finishing my paper that day. Otherwise I ______________ （go）there with them.
10. I wish he ______________ （tell） me the truth last week.