1. The house is decorated for Tet.

2. Some books was brought for his brother by Lan.

3. Fruit jam will be made for Tet by Lan.

4. The report has been finished.

5. Your homework should be done before going to class.

Củ cải có 2n = 18, trong mỗi tế bào ở thể tam bội có số lượng nhiễm sắc thể là

A. 36

B. 18

C. 45

D. 27