All the __________expressed their opinions on the __________ of the world.
| A．expertspresent；situation present |
| B．experts present；present situation |
| C．present experts；present situation |
| D．present experts；situation present |
---- Who is making so much nose in the garden?----____ the children.
| A．It is | B．They are | C．That is | D．There |
---- ____of them is your English teacher? ----The man wearing a blue coat.
| A．Which | B．Who | C．What | D．Whom |
___doesn’t seem to have been any difficulty solving the problem.
| A．It | B．He | C．There | D．That |
____ was in 1979____ I graduated from university.
| A．That; that | B．It; that | C．That; when | D．It; when |
---- Who knocked at the door?
---- I’ve no idea. I just pretended nobody was at home, so I didn’t ask who was___.
| A．he | B．that | C．she | D．it |