They’ve made full preparations, but it remains ______whether they will be able to do a good job in the experiment.
__________ __ you may be right , I can’t agree completely.
The time he has devoted in the past years _______ the disable is now considered ________ of great value.
The discovery of new evidence led to________
—________ is the best football player in your city? —Jerry.
Though they had not much to say, they email each other _____ .