It is one of the funniest things_______on the lnternet so far this year [ ]

Your bedroom is so dirty. Would you please _______, Peter—OK, mum. I’ll do it right away.

When did the couple die? —- It was on May 12 _______ the earthquake hit Wenchuan County

In face of the challenge for the moment, it’s most important to ________ a good state of health. [ ]

Mary made coffee ____ her guestswere finishing their meal.[ ]