Though he had tried to climb to the top of the mountain several times, he didn't _____.
Larry, we’re glad you ______. We were beginning to drive to the station to meet you.
---May I try on this green skirt? ---______, but I’m afraid the color is not quite suitable for you.
When first ______ to the market, these new products in their company enjoyed a great success.
--- Do we have to hand in our research reports this afternoon, Professor Smith? --- Yes, you _______ . I will be waiting to check them all the afternoon.
The young couple had a quarrel last night and neither of them would give in to ______.