Choose the correct form of the verb to fill in the following blank:The sale of tickets for the show ______________ from next week.

is started
are started
will start
was start

The correct answer is C. will start.

The sentence is about a future event, so the verb must be in the future tense. The other options are not in the future tense.

A. is started is in the present tense.
B. are started is in the plural present tense.
D. was start is in the past tense.

The sale of tickets for the show will start from next week. This means that the sale of tickets has not yet started, but it will start next week.