1. The fifth generation iphones, with artificial intelligence, _________ and perfected now.
A. developed                                                          B. have developed
C. are being developed                                            D. will have been developed
2. This ticket _________ you to a free meal in our new restaurant.
A. gives                       B. grants                             C. entitles                    D. credits
3. You __________ her in her office last Friday; she’s been out of town for two weeks.
A. needn’t have seen     B. must have seen                C. might have seen       D. can’t have seen
4. That was so serious a matter that I had no choice but ________ the police.
A. called in                   B. calling in                         C. call in                      D. to call in