You need some facts _____ to base your theory.
| A．where | B．on which |
| C．in place where | D．in the place |
These days he has made _____ in his studies by working hard.
| A．many progress | B．a lot of progresses | C．much progress | D．many a progress |
When he awoke, he found himself ______ in the hospital and ______ by an old woman.
| A．lying…being looked after | B．lying…be looking after |
| C．lie…be looked after | D．lie…being looked after |
When and where he came here _______ yet.
| A．isn’t known | B．aren’t known | C．has not known | D．have not been known |
Dandy left word with my secretary _____ he would call again in the afternoon.
| A．that | B．who | C．which | D．as |
It is obvious to the students ______they should get well prepared for their future.
| A．which | B．that | C．as | D．whether |