--Have you seen Jack? His mother is looking for him all the afternoon.
--No, I haven’t. I am sure his mother________be very worried.
A.must | B.may |
C.need | D.should |
--Have you seen Jack? His mother is looking for him all the afternoon.
--No, I haven’t. I am sure his mother________be very worried.
A.must | B.may |
C.need | D.should |