ould appreciateit if you could stay for lunch— Sorry, I I have another appointment

rk is not very profitable __________cash, but I am getting valuable experience from it.

We writing a letter of complaint to the manager himself．But we’d like to hear your opinion first

It was ______ the second-hand car that the mechanic spent the whole afternoon in the factory.

Do you believe his words?—No, what he said was________.