问题
选择题
—The guard keeps watch at the gate.
—So he does. Only those knows well could be let in.
A．close; who
B．tight; whom
C．tight; that
D．close; he
答案
答案：D
本题考查形容词及定语从句。tight紧的，close密切的。第二空he构成省略关系词who的定语从句。完整表达为：Only those（ who he knows well） could be let in.只有那些他（门卫）非常熟悉的人才可以进去。选D。