It was not until then that I came to know that knowledge _____(come) only from practice. You haven't done what you _____(promise) to do. I have j u st been to the room, but no one _____(be) in. He was studying in college when the war ______(break) out. Don't make a sound, or you will wake the baby; and then he ____(not get) to sleep again. When I ____(wake) up, the wind was no longer blowing. He ______(go) to bed. he went to bed a little earlier than usual. It is the first time as well as the last time that I _____(make) such ridiculous mistake. Tom ______(be) away from Shanghai for five days. I ______(mean) to take a good holiday this year, but I was unable to get away. We completed the task earlier than we _______(plan). He reminded me that I ______(not take) my medicine. I hope they ______(repair) this road by the time we come back next summer and then we can take i t. He's tired of working in an office. He _____(think) of changing his job. The sun was shining an hour ago, and it _____(rain) now. His son isn't diligent, but he ______(work) hard this term. He didn't come home last night. He _____(attend) an important meeting at school. Mary entered the room where her husband _____(wait) for her at the table. It was rather chilly. The sun _____(not shine). He tried hard to make people believe his story, but everybody knew he _____(lie). The boy constantly ______(ask) questions when he began to study mathematics. I don't know when we _____(work) together again. She _______(look) for her watch all the time, but she has not found it yet. The athletes _______(train) for three hours when the coach told them to have a break. By next summer, he _______(work) here for twenty years.