问题
选择题
The two girls are so alike that strangers find ___ difficult to tell one from the other．
A．it
B．them
C．her
D．that
答案
答案：A
考查形式宾语。It是形式宾语，代替真正的宾语to tell one from the other。句意：那两个女孩是如此的相似，以至于把她们区别开是很困难的。
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