Hangzhou marathon is a race _______aim is to help people know the importance of taking exercise.
| A．where | B．whose | C．which | D．that |
Mount Wuyi is such an attractive place of interest ________ everyone likes to visit.
| A．that | B．as | C．which | D．what |
The boy burst into tears ________ he saw his mother.
| A．at the moment | B．in a moment | C．for a moment | D．the moment |
________, I could not memorize the text.
| A．However hard did I try | B．However hard I tried |
| C．However I tried hard | D．However I had tried hard |
Raising environmental awareness was the aim of our art exhibition ____ last week.
| A．to hold | B．held | C．having held | D．being held |
_________ he was, he still went on with his work.
| A．Tired although | B．Tiring as | C．Tired though | D．While tired |