（Receive not）____her letter since last year ，we al

Since last year，she＿＿＿of the long distance．

In addition to the() (拖拉机), last year we also bought a new reaper.

A、anchor

B、tractor

C、calculator

D、elevator

Since last year, Professor Wang ______(研究取得了重大进展).

She hasn't written to me ______.

A．for last year

B．during last year

C．since last year

D．until a year ago

Since last year, she_____ of the long distance.

[ A] have covered three fifth

[ B ] have covered three fifths

[ C] has covered three fifths

[ D] has covered three fifth