28.—How much sugar did you put in my coffee? It tastes so bitter.—I am sorry to say that there’s ________left.I’ve forgotten to buy ______on my way home.
Look at the mess the boys made! You _______ have taught them how to behave themselves.
_______ I paid a visit to this scenic spot, I was deeply attracted by its beauty.
______ has an interest in the lecture can go for a ticket from the office next to the gate of the lecture room.
The new China was founded in 1949, ______ great changes have taken place.
She insisted that we ________ the source of the river and begin our journey there.