—Hi , Tracy , you look tired. —I’m tried. I ______ the living room all day.
| A.painted | B.had painted | C.have been painting | D.have painted |
It's said to be a case of murder ________ the children were used by adults.
| A.when | B.where |
| C.which | D.that |
Naturally a smile ________ the eyes participate is extremely communicative.
| A.to which | B.in which |
| C.at which | D.with which |
With hundreds of attractions, Beijing is a city ________ makes a lasting impression on its visitors.
| A.which | B.where |
| C.what | D.when |
Just use this room for the time being, and we'll offer you a larger one ________ it becomes available.
| A.as soon as | B.unless |
| C.as far as | D.until |
Everything was placed exactly ________ it used to be before she left the laboratory.
| A.why | B.when |
| C.where | D.though |