I have been skating _______ nine o’clock.
A. for B. since C. at D. From
_____ have you been swimming? For five years.
A. How many times B. How long
C. How often D. How much
I hope _______more robots to help people in the future.
A. there were B. there will have
C. there will be D. there is
---Mary, how much did you ______ the new watch? ---300 yuan.
A. wait for B. look for
C. pay for D. care for
The idea ________ good. We can try it.
A. taste B. tastes C. sounds D. Hears
— Anna, have you ______ seen China’s Got Talent (达人秀)?
— Of course. I ______ it last weekend.
A. never; saw B. ever; have seen
C. never; have seen D. ever; saw
