Pretest Grammar Review/SAT prep

Which one is correct? “Sometimes George buys more soup (than/then) he can afford.”

“Which you know for a fact” is an example of an independent clause.

Which one is correct? I was (effected/affected) by the news that Elvira was never coming back.

Which one is correct? “I can't decide (whether/weather) I want cookie dough or M&M ice cream.”

Is the grammar correct? “Leslie decided to marry JR; however, the wedding was lame.”

“Charlie played the violin with her paws” is an example of an independent clause.

“However, the monkey’s house is being tagged with graffiti” is an example of passive voice.

When do you use a semicolon?

“Monkeys adore the citizens of Tewksbury” is an example of active voice.

Is the grammar correct?: “First you told me there was no pizza left, however, I found some in the freezer. “