Put the verbs in brackets in the correct form, present simple

Put the verbs in brackets in the correct form, present simple or present continuous. Diana ______ (sometimes forget) to do all her homework.I _______ (try) to do this exercise at the moment.The students ______ (just start) to get to know each other.Our teacher ______ (always tell) us a joke at the beginning of the lesson.Our English tests _____ (get) harder and harder!Learning new vocabulary ____ (often take) a lot of hard work.