The proposal had to be send to the manager of the company for approval
A. No improvement
B. has to be sent to the
C. have been sent by the
D. has to be sent for the
Right Answer is: B
The verb “be” is followed by past form of main verb. So, the underlined part is incorrect as base form of main verb has been used here. The correct answer is option B.
Option D is incorrect due to wrong use of preposition “for”.
Option C is incorrect due to wrong use of verb “have”.