Subject-verb agreement: Basic

In math, we know that two sides of an equation must be equal–in a sense, they have to agree. In writing, subjects and present-tense verbs must also agree: if the subject is singular, so is the verb; if the subject is plural, so is the verb. In the following sentences, see if you can choose the verb that agrees with its subject.

1. The frogs very loudly at our cottage.a) croaksb) croak
2. you finished your homework?a) Haveb) Has
3. The horses wildly across the field.a) gallopsb) gallop
4. the team members agree?a) Dob) Does
5. Lightning scared me since I was a child.a) hasb) have
6. Making plans difficult in a group.a) isb) are
7. The basketball team not playing very well.a) isb) are