He hasn’t decided _____ he will go abroad next year.
To their great relief, the missing child returned home, ______, after an absence of two weeks.
Have your working conditions improved?---No, ______than before, I’m afraid.
The task is too much for me, so I can’t carry on ______any longer. I must get some help.
I haven’t seen______ this since I collected stamps.
—— What do you think of the concert?—— Oh, it was______success.