----Who did you spend last weekend with? ---- .
It was nothing but his ten years of hard work that _______ his success in his research.
_______ only one week left before the final examination, we’re kept busy going over our lessons.
— Why not join the football club? — I’d love to, but I’m afraid it will _______ too much of my time.
_______ with the size of the whole earth, the highest mountain does not seem high at all.
To be honest, you can hardly imagine the difficulty that I had _______ the money for buying a car.