D.remember
doing
sth.意思是记得做过的事,就算换了forget也一样。
I
remembered____D_____
the
letter,
but
it's
still
here.
A.
to
post
B.
post
C.
posted
D.
posting
解析:原句表达的意思是:我记得已把信寄出了,但它还在这里。(即记错了),关键词but(但是),表转折。
remember/forget
doing
sth.记得/忘记做过某事(已做)
remember/forget
to
do
sth.记得/忘记去做某事(未做)