1、Dear Jenny, thank you for your letter which ______ on April 1st.
A. arrived B. arrived at C. arriving D. arrived me
2、_________, they delivered the message as quickly as they could.
A. Arriving at B. On arriving C. When arriving D. Arrived
3、I do believe that ______ swim across the river, but, in that situation, I ____ do that.
A. am able; couldn’t B. could; was able to
C. was quite able to; couldn’t D. couldn’t was able to
