When he was alive, the old scientist used to say that knowledge ____from practice and he gained his experience by doing a lot of practical work.
Drilling oil well was ________ work that he couldn’t finish it by himself.
Last week, only two people came to look at the house,________ wanted to buy it.
2Was it in the 1969____the American astronaut succeeded____ landing on the moon.
–I wonder if you’d like to go to the cinema with me. —Well, , if you don’t mind.
It was after careful consideration we decided to take action.