____ ，but he still could not understand it.
| A．Told many times | B．Having been told many times |
| C．He had been told many times | D．Though he had been told many times |
At weekends in Chengdu, you can often see many people ________ outside some restaurants,__________to have dinners
| A．sit; wait | B．seated; waiting |
| C．seating; waiting | D．sitting; wait |
The laboratory was well ______ for atomic research.
| A．offered | B．equipped | C．provided | D．supplied |
A poet and artist ______ coming to speak to us about Chinese literature and painting tomorrow afternoon.
| A．is | B．are | C．was | D．were |
The president spoke at the business meeting for nearly an hour without ______ his notes.
| A．bringing up | B．referring to | C．looking for | D．trying on |
Her work changed the way _______ people think about chimps.
| A．that | B．in which | C．不填 | D．all of above |