It was nothing but his ten years of hard work that _______ his success in his research.
, it’s predicted that global temperature will rise futher at current rates of CO2 emission.
The drug can’t cure your disease at all. It can provide only relief from pain.
If you want to see the chairman, you’d better make an with his secretary first.
I remain that a peaceful settlement of the dispute can be achieved.
If you really want to learn French, you just have to keep yourself to the language whenever you can.