Will you go camping with us， Bob？
I'd love to， but I ______ study for the test．（ ）
| A． |
may |
B． |
must |
C． |
can |
D． |
could |
Kate， do you know _____？
I'm not sure． Maybe a Bird﹣watching Society worker．（ ）
A．where can I watch birds
B．what is the man with a camera
C．where I can watch birds
D．what the man with a camera is
Daniel， do you know that bees never get lost．
Yes， bees always remember _____ the same way as they went．（ ）
A．come backB．came back
C．coming backD．to come back
The police are watching the suspect _____ for more clues which will help solve the case．（ ）
A．clearlyB．highlyC．closelyD．heavily
Facial recognition （人脸识别） technology is widely used for payment． _____， we needn't enter the passwords any more．（ ）
A．For exampleB．As a result
C．What's worseD．What's more
My feelings for you have not changed．
But you have changed． You are not as you _____．（ ）
A．areB．wereC．will beD．have been