John tries to get sara's attention, but hasn’t succeeded yet. tries is underlined choose the word or group of words that best replaces the underlined part of the sentence. a) try b) will be trying c) has been trying d) will have tried

either online or traditional classroom can work for students. which is better will depend on students and teacher. students may have trouble following a lesson in classroom while they can study at their own pace online. other students may have trouble staying focus on their own in online classes. teachers are more used to classroom teaching but they may also be more worry about their jobs teaching online classes and work harder.

i cannot see any of the statement