Please call Jenny _____ 536 4428. [ ]
A. in
B. to
C. on
D. at
答案：D
独立建造的硝酸铵库房，建筑耐火等级不应低于()级。
A．一
B．二
C．三
D．四
When his brother telephoned him last night, he＿＿＿＿＿asleep.
A．kept
B．got
C．fall
D．fell
