Not only ______ difficult to light, but it smelled of oil.
— The physics exam is not difficult, is it?—()Even Harry to the top students failed in it.
Maintaining an energetic presence is very difficult to do unless you’re involved with something you enjoy.
____
Some of the roads were flooded, _____ made our journey more difficult.
It was _____ it raised many difficult questions that the book took a long time to come out.
In a planned economy it was often difficult to secure spare parts,
_____ langue a ses difficultés.
Mark Peter says it can be difficult for companies to be innovative because this involves
It’s difficult()this work today.
According to the Bureau of Labor Statistics, it is difficult to find a job.
____