In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.
The best way to ____________ the children's poor test grades is to teach again the lesson and give a second test.
In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.
I express my gratitudes(A)/to all those who(B)/have voted for me.(C)/No error(D)