老师问“今天谁值日?”应问:A.Who’s on duty today?B.Who’s in duty today?
()Let’s a look. A. have B. having C. has
()There are six legs six feet. A. or B. but C. and
()There are arms. A. one B. a C. fifteen
()Here is his . A. arms B. legs C. body
()We are going to draw a picture the computer. A. in B. at C. on