Doctors will conduct a(an) _______ examination to determine whether your eyes are suitable for the operation.
| A．constant | B．optimistic |
| C．thorough | D．original |
Jack wasn't saying anything but the teacher smiled at him ____ he had done something very clever.
A as if B in case C while D though
Only after they had discussed the matter for several hoursa decision.
| A． |
they reached |
B． |
did they reach |
C． |
they reach |
D． |
do they reach |
Before a problem can be solved, it must be obvious ______ the problem itself is.
A. what B that C which D why
It is the most instructive lecture that ________since I came to this school.
A attended B had attended C am attending D have attended
Do you wake up every morningenergetic and ready day?
A feel B to feel C feeling D fell