I ________ to the lecture this afternoon, but I ________ a bit ill.
This printer is of good quality. If it ______ break down within the first year, we would repair it at our expense.
---What a mistake!---Yes. I ______ his doing it another way, but without success.
---How long have you been here?---Only about five minutes. Henry and Simon ______ here with me.A.walk B. have walkedC. walked D had walked
A new ______ to teaching languages is being used here, and it has turned out to be very helpful to the students.
Very soon the message drew dozens of responses from his classmates and other teenagers,all ______ about their excessive workload during the National Day holidays.