Вопрос по английскому языку:

Choose the right form of the verb in brackets
a) There ___ (has/have) been too many interruptions in this class
a) The jury ___ (is/are) trying to reach a decision
a) The number of days in a month ____ (is/are) thirty
a) Any party ____ (is not allowed/are not allowed) to assign his duties under contract
a) Conducting negotiations___ (is/are) the best way to come to an agreement
a) A large number of managers ___ (was/were) present at yesterday’s economical conference
a) Everyone ____ (is/are) required to be disciplined at work.
a) The company ___ (have/has) received big profits this year.
a) Either our firm or the competitive firm___ (deliver/delivers) goods to the market of this city.
a) Neither the manager of the firm nor its employers ___ (was/were) satisfied with the results of their work
a) Either he or his friends ___ (was/were) ready to undertake the responsibility for this work
a) The organization ___ (has/have) lost many members this year.
a) None of people ___ (is/are) sure of having good prospects in the future.
a) On Sunday there __ (was/were) a large number of customers at the market.
a) Neither Bill nor his parents ___(has/have) seen this movie before.
a) How many contracts (did/do) our company conclude last month?
a) The pliers ___ (was/were) on the table. I saw (it/them) there yesterday.
a) The majority of employees __ (was/were) missing from work
a) No retailers ___(has / have) enough money to acquire necessary goods.
a) Most of the people, who have access to the Internet, (use/used) the network only for sending and receiving messages.
a) There ___ (has/have) been a number of terrible battles during the war.
a) Of the two foreign banks the English bank acts ___ (more/most) successfully in Russia