Open the brackets and use the correct tense from. 1.Jane(to learn) a lot of things about animals by Friday. 2.The students (to prepare) for the trip by that time yesterday. 3.I was surprised,because I never (to see) a grizzly ...

Open the brackets and use the correct tense from. 1.Jane(to learn) a lot of things about animals by Friday. 2.The students (to prepare) for the trip by that time yesterday. 3.I was surprised,because I never (to see) a grizzly bear. 4.The forest was full of rubbish.Somebody (to throw) it. 5.When the students (to return) their friends ( to go) away. 6.When we ( to reach) the forest the travellers already ( to camp) 7.The students ( to solve) some ecological problems in the camp by Sunday. Пожалуйста помогите