--- Congratulations! ---Thank you. If it hadn’t been for your help, we ____ in the experiment.
---So you missed the English class this morning? ---________. I arrived 20 minutes after it started.
Your speech was heard by a group of judges, all of _______ agreed that it was the best one this year..
It is the first time that I _______ this kind of tasty moon cake.
Neil Armstrong was the first man ______ on the moon in July 1969.
Busy as the working mother is, she still_____ a lot of time to her children.