Direction (Q. 5-10): Read each sentence to fínd out whether there is any grammatical error in it. The error, if any, will be in one part of the sentence. The number of that part is the answer. If there is no error, the answer is 4). (Ignore errors of punctuation, if any.)
Q. 1) If anyone happens /2) to call while I /3) am out, please ask them /4) to leave a message for me.