The number of medical schools reached 18 in the early 1990s and ______ around that level ever since.( )
are remaining
have remained
is remaining
has remained
The criminals ______ in a hotel the other day were connected with a murder(谋杀).
With a lot of things , John will have a difficult time.
A big earthquake hit Ludian in Yunnan, ________ many deaths and injuries and a big loss of property.
______ along with host families, I believe, language travel students are likely to get enough language practice.
Today we have chat rooms, text messages and email, but we seem _______ the art of communicating face-to-face.