This novel was concerned _____the Second World War, while most teenagers are more concerned _____the hero’s love story[ ]

mprehensive surveys have provided the most__________statements of how, and on whatbasis, data are collected.

Would you please_______this form for me to see if I’ve filled itin right?[ ]

The doctor thought ___ would be good for you to have aholiday

Before 2003, there was no direct airlineTaiwanand the mainland.