1.several agents were dispatched to Europe (for the purpose of investigating) a lead that could potentially provide a break in the case
a) to investigation on
b) to investigation
the answer is B…why??
2.In baseball , the batter attempts to hid the ball within a ninety degree( quadrant ,in cricket the batter can hit ) the ball in any direction.
A) quadrant , but the batter can hit in cricket
B) quadrant , but in cricket the batter can hit
the answer is B… what is the difference between A and B ??
3.Jason (was confused )A by the theory,(about)B which many of his classmates often referred ,(because)C it seemed to (be based)D on an obviously false premise.(No error)E
the answer is B …why??
4.cara’s(constant)A improving race times demonstrated that her new training (regimen)B had been (more effective)C than even she(had hoped).(No error)E
the answer is A…shouldn’t it be C (more effectively) …why the answer is A??
B is incorrect; either you copied something wrong or your book is wrong.
A sounds very awkward.
B is the answer. It is better to replace "about" with "that".
A is the answer. It should read "constantly" (adverb modifying the word improving). C should not be "more effectively". Effectively is an adverb which has no place in that part of the sentence.
B must be “to investigate.” You’ve typed it wrong, I’m sure.
(A) says “the batter,” which refers to the batter in baseball, who can’t hit “in cricket.” It’s a modifier error.
It’s an idiom error; one doesn’t “refer about” something, one “refers to” something.
(A) must be “consistently” since it’s modifying the adjective “improving.” (C) can stay as an adjective b/c it’s modifying a linking verb (“to be”). You say “He is bad” not “he is badly,” after all.
I think OP inserted the (about) in the wrong place for #3, which makes my answer wrong and the above correct. I don’t really agree with the above explanation of #2 however.
but i have some questions !!