【多选题】
He___________ to develop his ability.
【单选题】
He his success to good luck.
【单选题】
There is no doubt ____he will succeed in his business.
【单选题】
She insists that he ______ his now.
【单选题】
____ he tried his best , he still failed the examination.
【单选题】
He requested [] actually he pleaded that his name be withheld.
【单选题】
He speaks English ___ he speaks his mother tongue.
【单选题】
_______ he tried his best, he still failed the examination.
【单选题】
He tried to _______relations with his former wife but he failed.
【单选题】
Was it until the1990s ____ the old man finally got a house of his own?