----Why? Tom, your shirt is so dirty?
----Mom, I____ my store room downstairs.
| A．cleaned | B．have cleaned | C．was cleaning | D．have been cleaning |
Do you remember those days ____ we spent along the seashore very happily?
| A．when | B．where | C．which | D．who |
Tom did not take away the camera because it was just the same camera ____ he lost last week.
| A．which | B．that | C．whom | D．as |
Those ____ want to go please sign their names here.
| A．whom | B．which | C．who | D．when |
Where is the man ____ I met this morning?
| A．when | B．where | C．which | D．who |
Who is the woman ____ is sweeping the floor over there?
| A．who | B．/ | C．that | D．when |