I ______ the blackboard carefully, but I
题型:选择题
问题:
I ______ the blackboard carefully, but I can ______ nothing.[ ]
A. look,seer
B. look at, see
C. see, look
D. see, look at
I ______ the blackboard carefully, but I can ______ nothing.[ ]
A. look,seer
B. look at, see
C. see, look
D. see, look at