It is certain that the International Horticultural Exposition(世界园艺博览会) _____ in the year of 2011 in Xi’an will attract a lot of tourists. A being held B held C will be held D to be held
Not until the train pulled into the next station ________ her suitcase gone.
He hurried to the booking office only ______ that all the tickets had been sold out.
The problem lies_______ we are now giving him a fish, not teaching him to fish.
When ____ comes to saving energy, big changes start with small steps, like turning off the lights.
Of the two cameras, I would prefer ________ one, which is very easy for me to carry.