20、1. gather

A. method

B. maths

C. thorough

D. smooth

2. Asia

A. carriage

B. stadium

C. official

D. radium

3. parent

A. glare

B. measure

C. failure

D. capital

4. watched

A. filled

B. recognized

C. whispered

D. practised

5. trunk

A. language

B. strange        

C. thunder  

D. twentieth