—I want to know if Mary ______ us in the art show tonight.—I believe if she ______ her homework, she will join us.
If it had been fine yesterday,we could have watched that air show. But it ________all day.
Yesterday evening,I ________along the street when I suddenly met my maths teacher.
The population of the world ________still ________now.
There ________a basketball match between Class One and Class Three this afternoon.
Our math teacher ________in our school for 20 years and he ________here when he was 23 years old.