There (is/are) five cats.
There are five cats.
There (is/are) a dog.
There is a dog.
There (is/are) a 1,000 Yen note on the floor.
There is a 1,000 Yen note on the floor.
There (is/are) ten students.
There are ten students.
There (is/are) a clock on the wall.
There is a clock on the wall.
If I were taller, I (could/can) play basketball better.
If I were taller, I could play basketball better.
If it rains tomorrow, I (would/will) stay home.
If it rains tomorrow, I will stay home.
If I had wings, I (would/will) fly to Hokkaido.
If I had wings, I would fly to Hokkaido.
If she studies hard, she (could/can) pass the test.
If she studies hard, she can pass the test.
If we had the day off, we (might/may) go to the mall.
If we had the day off, we might go to the mall.
I'm not sure (what/who) to do this weekend.
I'm not sure what to do this weekend.
I don't know (who/how) to fix computers.
I don't know how to fix computers.
I'm not sure (who/which) to ask about joining English Club.
I'm not sure who to ask about joining English Club.
He needs to know (which/when) to buy his plane ticket.
He needs to know when to buy his plane ticket.
They don't know (which/where) to go for dinner.
They don't know where to go for dinner.