Which sign means that you must wear a mask(口罩) ________.
A.
B.
C.
Do you really want to do this, my boy? Think twice! Or you’ll ________it one day.
A.regret B.reflect C.remain
—Are you satisfied with your students’ performance this time?
—Sure, ________not all have passed exam.
A.because B.if C.though
Mike is often heard________in his room.
A.sang B.to sing C.sing
—Have you seen a girl________skirt is red?
—Yes, she went to the library.
A.whose B.who C.whom
The silk shirt ________ very soft. I like it.
A.felt B.is feeling C.feels
