1. A number of students is absent today

2. A number of student is absent today

3. Number of students are absent today

4. A number of students are absent today

1. Karim said that he knew the boy

2. Karim said that he knew this boy

3. Karim said that he knew that boy

4. Karim said that he knows this boy

1. My wallet had been lost

2. My wallet has been lost

3. My wallet was lost

4. My wallet is lost

1. Pen is mightier than a sword

2. The pen is mightier than sword

3. A pen is mighter than the sword

4. The pen is mightier than the sword

1. questionnaire

2. questionaire

3. questionnare

4. questioneire