Put the verbs in brackets into the correct tense form and 1)-Who ... this park .... (to found) by? -it ...(to found) by local authorities thirty-five years ago. 2)-How many animals ... (to keep) in this Zoo last year? -Last year we ... (to keep) more than one hundred animals. 3)-....the measure to protect this area from pollution ...(to take) yet? -No they ...(to discuss)at the moment. 4)- .... you .... (to write) the letters already? -The letters ...(to write) at the moment. - ....they .... (to solve) this problem yet? -No it (to solve) tomorrow.