1 Books … are very expensive nowadays. A which are our friends B , which are our friends, 2 Martin… is very naïve for his age. A who is my brother B , who is my brother, 3 People … abuse animals must be arrested. A who B which C where 4 Vivien … go as it was already late. It was getting darker every minute. A had to B must C should 5 You … share this news with Col as he is your friend. A should B must C have to 6 Sue wishes she … in a warm country now. A is B was C will be 7 You should avoid … at him, he may critically react to that. A stare B staring C to stare 8 I it … summer, it … warm or even hot. A is, is B was, was C was, would be 9 If we … a chance, we … the school project, but we’ll be very busy. A had, would join B had had, would have joined 10 If you … the diet, you … slim now. A had followed, would be B followed, would have looked