The children ______ very quiet; I wonder
题型:选择题
问题:
The children ______ very quiet; I wonder what they ____up to.
A.were; are being
B.are being; are
C.are; do
D.are being; do
The children ______ very quiet; I wonder what they ____up to.
A.were; are being
B.are being; are
C.are; do
D.are being; do