The visiting professor offered us some advice, of great help to our English learning.
| A．I think it is | B．I think which is |
| C．which I think is | D．which I think it is |
"Can you read?" Mary said to the notice.
| A．angrily, pointing | B．and point angrily | C．angrily, pointed | D．and angrily pointing |
English is a language ______ in many countries.
| A．spoken | B．speaking | C．be spoken | D．to speak |
Most of the artists ______ to the party 'were from South Africa.
| A．invited | B．to invite | C．being invited | D．had been invited |
Do you know the boy _______ under the big tree?
| A．lay | B．lain | C．laying | D．lying |
The computer centre, ______ last year is very popular among the students in this school.
| A．open | B．opening | C．having opened | D．opened. |