Have you_____ seen a tiger?
A.yet
B.just
C.ever
第1题:
They see many things which most people would fail____.
A: see
B: to see
C: seeing
D: seen
第2题:
A、see
B、saw
C、I have ever seen
D、seen
第3题:
第4题:
You bad better ________ a doctor as soon as possible.
A、seeing
B、saw
C、see
D、seen
第5题:
Uncharted lights and radar beacon transmissions may be ________ near the station.
A.encountered
B.met
C.contacted
D.seen