1 . Daniel hadn’t slept well, _________, he had a hard time focusing on his work.

A．however

B．though

C．therefore

D．yet

2 . Although he was weak, ______ he tried his best to do the work.

A．but

B．so

C．then

D．yet

3 . Hide behind the tree,          he will see and catch you.

A．and

B．or

C．but

D．yet

4 . Two heart attacks in a year. It hasn’t stopped him from smoking, ________.

A．though

B．although

C．but

D．yet

5 . Emoji can help communication feel friendlier, and ________ a serious note can be softened with an encouraging smile.

A．even

B．still

C．also

D．yet

6 . I think traveling will not only enrich our life, ______ broaden our horizon.

A．and

B．yet

C．but

D．so

7 . I _____ don’t believe in ghosts even after my experienceat the Rose Inn.

A．already

B．yet

C．no longer

D．still

8 . —What’s the secret of success, Dr Know?
—More time and effort, __________you’ll make it someday.

A．yet

B．or

C．and

D．but

9 . It’s really dangerous to work on the roof. ________, you should take care of yourself.

A．Therefore

B．However

C．Otherwise

D．Yet

10 . He insisted that he saw a UFO, ________ he couldn’t provide any solid evidence.

A．while

B．otherwise

C．yet

D．however