问题

Harry’s mom looks young and beautiful. It’s hard to imagine she is already _ her __.

A:in; fifty
B:in; fifties
C:on; fifties
D:in; fiftieth;

正确答案是：

同类题型

I’m planning to two hundred books to the students in poor areas .

His first book _____next month is based on a true story. [ ]

oblem may not____, but there’s no harm tobe careful

. Information has been put forward ____more middle school graduates will be admitted into universities.

___ of the students in my class can arriveon time because of the sudden heavy rain .