Tenses - Study Mode

[#686] Fill in the blank with the most appropriate word. Peter ___ his lessons. When he finishes them he'll watch TV.
Correct Answer

(D) is doing

[#687] More and more of my colleagues . . . . . . . . these days because the owners of the company have changed a lot of procedures. These changes won't affect me though, because I . . . . . . . . my job here only recently.
Correct Answer

have left/was starting

[#688] In the last elections, Sonia Gandhi . . . . . . . . by a big margin.
Correct Answer

(D) won

[#689] Below a set of instructions is given on preparation of instant coffee. Using the instructions, fill in the blank in the sentence given below. (i) Boil water. (ii) Take one teaspoon each of instant coffee and sugar. (iii) Add boiling water and stir the mixture vigorously. (iv) Warm milk separately. (v) Add warm milk to the mixture and stir. (iv) Hot instant-coffee is ready to drink.
Correct Answer

(A) is warmed

[#690] The average surface temperature of earth . . . . . . . . more than 1 degree Fahrenheit since 1900.
Correct Answer

(A) has increased

Explanation

Solution: In the given sentence "The average surface temperature of earth has increased more than 1 degree Fahrenheit since 1900," the most appropriate option to fill in the blank is " has increased ." The verb phrase "has increased" is in the present perfect tense, which is used to indicate an action that started in the past and is still relevant in the present. In this context, it expresses the ongoing impact of the increase in the average surface temperature of the Earth since 1900. The other options do not use the correct verb form for the given sentence. Option B, "is increasing," is in the present continuous tense, which does not convey the continuous nature of the increase from the past to the present. Option C, "had increased," is in the past perfect tense, which does not match the time frame of the sentence (since 1900). Option D, "is going to increase," is in the future tense, which does not fit the context of the sentence describing an increase that has already occurred. Option E, "ha's been increasing," contains an error with the contraction "ha's" instead of "has" and also uses the present perfect continuous tense, which is not the appropriate tense for this sentence. Therefore, the correct answer is " A. has increased ."