He had collected plenty of historical evidence, proved that humans used to have different sleeping patterns.
| A．that | B．which | C．it | D．what |
______ some of this juice —perhaps you’ll like it.
| A．Trying |
| B．Try |
| C．To try |
| D．Have tried |
The number of people invited to the conference _____ 150,but a number of them ______ absent for different reasons.
| A．were;was |
| B．were;were |
| C．was;were |
| D．was;was |
A library with seven thousand books _____ to the area as a gift.
| A．is offered |
| B．have offered |
| C．are offered |
| D．has offered |
All the employees except the manager _____ to work online at home.
| A．encourages |
| B．encourage |
| C．is encouraged |
| D．are encouraged |
The teacher，with 6 girls and 8 boys of her class，_____ visiting a museum when the earthquake struck.
| A．was |
| B．were |
| C．had been |
| D．would be |