It was in 1969 ______ two Americans went to the moon by spaceship.
We will go shopping if it____ tomorrow.
Hurry up ! The train _____ . You know it _____ at 8:30 a.m .
They _______ a meeting when the earthquake happened.
The farmers _____ a lot _____ the flood because it rained heavily .
Whenever you are in trouble, you may ________ Mike. He is helpful.