I'm____I can't come on time. [ ]
A. afraid
B. tired
C. worried
D. glad
A
光固化复合树脂充填时，分层光照每层的厚度不超过 （）
A.0.5mm
B.1mm
C.1.5mm
D.2mm
E.2.5mm
Now more and more people like to ________ cotton clothes.
A．put on
B．dress
C．dress up
D．wear
