Choose the best answer.
We’ll get wet if we ______ out.
go
did go
went
had gone
Choose the best answer.
All the aquatic plants and animals will die if the factory _______ dumping poison into the lake.
will keep
to keep
kept
keeps
Choose the best answer.
If he________exercises, he________play soccer.
doing/can
does/could
does/can
did/could