Barack Obama delivered a speech to 500 local youths during his visit to China, many of _______ were from Fudan University and Tongji University.
| A．them | B．whom | C．which | D．those |
I ________ to visit you later that day, but I had to phone and cancel.
| A．come | B．came | C．am coming | D．was coming |
Ifto look after luggage for someone else, inform the police at once.
| A． | asked | B． | to ask | C． | asking | D． | having asked |
He wrote a letter ______ he explains what had happened in the accident.
| A．what | B．which | C．where | D．how |
Animals are obviously ______ lower form of life than _______ man.
| A．a ; / | B．the ; the | C．a ; the | D．/ ; / |
Shethe carpet with some very nice curtains in color.
| A． | connected | B． | fitted | C． | equipped | D． | matched. |