问题
Mum, Mary bought a pet dog yesterday. Could you please buy __________ for me? — Sure. But you must look after it yourself.
A:that
B:this
C:it
D:one
B:this
C:it
D:one
正确答案是：
同类题型
Please ________ a doctor at once, Jack. The child is badly hurt.—OK. I will.
I _______ the early bus because I got up late this morning.
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I traveled all night to New York and got there ________ Monday Morning. [ ]