In each of the following questions, sentences are given with blanks to be filled in with an appropriate word (s). Four alternatives are suggested for each question. Choose the correct alternative out of the four and indicate your choice for the correct answer.

I doubt whether it_____ an impact on the readers.

In these questions read each sentence to find out whether there is any error in it. If there is no error, the answer is (D).

These drugs (A) / have no influence (B) / on the virus. (C) / No error (D)

In these questions read each sentence to find out whether there is any error in it. If there is no error, the answer is (D).

Such a behaviour (A) / can easily (B) / cause offence. (C) / No error 

In these questions read each sentence to find out whether there is any error in it. If there is no error, the answer is (D).

He managed (A) / to open the lid (B) / by a screw -driver(C)/ No error (D) 

In these questions read each sentence to find out whether there is any error in it. If there is no error, the answer is (D).

A river is any natural stream (A)/ for fresh water (B)/ larger than a brook. (C)/ No error (D)

In these questions read each sentence to find out whether there is any error in it. If there is no error, the answer is (D).

By arresting the local criminals and encouraging good people (A)/we can end (B)/hostilities of that area. (C)/No error (D) 

In these questions read each sentence to find out whether there is any error in it. If there is no error, the answer is (D).

Remember that with the skill (A) / to write good sentences (B) / you will have the flexibility to convey your ideas cisely. (C) / No error (D) 

In these questions read each sentence to find out whether there is any error in it. If there is no error, the answer is (D).

He stayed in Delhi (A)/ for one and a half months (B)/ because I insisted on him doing that. (C)/No error (D)