She has learned English ______ nine years.

clear Security Summit is an initiative of Mr. Obama, considers nuclear terrorism to be one of the greatest threats to international security.

It is really surprising that the girl ______ so early.

Where’s your mom, Tom ––She _______ some washing when I got home.But now she isn’t at home .

How is the result, doctor?— Well, your health is ____ good, but you do have a few minor problems[ ]