–Thank you for your assistance, without ________ I might have been in danger.
--That’s all right, anyone in my place ________ the same thing.
| A．that; will do | B．which; would have done |
| C．it, would | D．which; can have done |
Some people care much about their appearance and always ask if they look fine in ________ they are
wearing.
| A．that | B．what | C．how | D．which |
Among the crises that face humansthe lack of natural resources.
| A． | is | B． | are | C． | is there | D． | are there |
An ecosystem consists of the living and nonliving things in an area ________ interact with one another.
| A．that | B．where | C．who | D．what |
at the photos, illustrations, title and headings and you can guess what the reading is about.
| A． | To look | B． | Looking | C． | Having looked | D． | Look |
I cannot hear the professor clearly as there is too much noise ________ I am sitting.
| A．before | B．until | C．unless | D．where |