The correct answer is: has
The verb “has” is used to indicate that something is true or exists in the present. In this case, the sentence is saying that the person has to go to Canada for the next stage of his training. This is a present fact, so the verb “has” is the correct choice.
The other options are incorrect because they do not indicate that something is true or exists in the present. The verb “had” is used to indicate that something happened in the past. The verb “was” is used to indicate that something was true or existed in the past. The verb “to be” is used to indicate that something is true or exists in the present or future.
Here is a more detailed explanation of each option:
- A. have
The verb “have” is used to indicate that something is true or exists in the present. In this case, the sentence is saying that the person has to go to Canada for the next stage of his training. This is a present fact, so the verb “has” is the correct choice.
- B. had
The verb “had” is used to indicate that something happened in the past. In this case, the sentence is saying that the person has to go to Canada for the next stage of his training. This is a present fact, so the verb “had” is not the correct choice.
- C. was
The verb “was” is used to indicate that something was true or existed in the past. In this case, the sentence is saying that the person has to go to Canada for the next stage of his training. This is a present fact, so the verb “was” is not the correct choice.
- D. has
The verb “has” is used to indicate that something is true or exists in the present. In this case, the sentence is saying that the person has to go to Canada for the next stage of his training. This is a present fact, so the verb “has” is the correct choice.