

Directions: Answer the following based on the information given below.
Explanation: only pronoun ‘I’ can use have , given in the question.
Directions: Choose the most logical order of sentences from among the four given choices to construct a coherent paragraph.
Explanation: A is the opening sentence as it gives the background what researchers had been doing for the fast 20 years. B follow A no success after such a long trial C follow B suddenly there was a change. The follow C- telling us what that change was.
Directions: Choose the most logical order of sentences from among the four given choices to construct a coherent paragraph.
Explanation: Sentence can’t start with It or by hence B is the opening statement.
Directions: Choose the most logical order of sentences from among the four given choices to construct a coherent paragraph.
Explanation: D should precede C and B cannot follow C, hence Option 3 is correct